To get out of a rut, have more sex, talk more often, give each other space, go on vacation, attend couples therapy — the list of ways to "reignite a spark" is pretty much endless, and it often works for couples who are just going through a phase.

That said, "if those have failed after an honest investment of time and effort," Joanne Ketch, LPC, LMFT, a psychotherapist in private practice, tells Bustle, "it might be time to leave."

While not every couple is super touchy feely, take note if your partner pulls away when you go in for a hug, or if you tend to turn over in bed so they can't cuddle you. The lack of desire for intimate moments like these may be a subconscious sign you're no longer connected, dating coach Jade Bianca, tells Bustle. And it may mean one (or both) of you wants to move on.

There are so many factors that impact sex drive, so don't immediately assume your relationship is ending just because you aren't in the mood for sex. But if you've looked into other reasons — stress, depression, fatigue, underlying anger — and still can't find the cause, Bianca says it may mean the relationship is drawing to a close.

"When relationships start to near their end, couples tend to begin spending more time apart," Bianca says, which might explain why you always watch TV separately or keep cancelling date night. While it's good to have space in a relationship so that you can maintain your individual lives, the desire to hang out shouldn't fade.

Lots of people in happy relationships daydream about "what could have been," or think what about being single. It's only when you can't stop daydreaming that it might not bode well for the future of your relationship, Ketch says.

If you can't shake the feeling, look into why you have an ongoing desire to be "free." It might mean your relationship has run its course, or that it no longer makes you happy.

Similarly, if you constantly wonder what it would be like to date another person, take time to think about what you're looking for in a partner at this stage of your life — and if your current relationship still feels like a good fit.

A partner's annoying habits — like knuckle cracking, or their habit of leaving dishes "to soak" in the sink — aren't problems on their own. It's only when you constantly fight about them, get disproportionately angry, or refuse to roll your eyes in a good-natured way that your irritation becomes a red flag.

"In a healthy relationship, investments into affection and playfulness 'cover' the withdrawals of the habits that might annoy [you]" Ketch says. "In a relationship that's ending, those moments of playfulness and affection have decreased and the annoyance becomes more apparent."

In the same vein, don't overlook constant, angry bickering. While it might be a sign of a different underlying problem in your relationship — and one that could be fixed, if you discovered what it is — it might also be a sign you're ready to move on.

Take note of how you talk to each other, too. You know, that "condescending, passive-aggressive tone that makes everyone at brunch uncomfortable," Dr. Mike Anderson, a sex and relationship expert for OhMy.ca, tells Bustle. If you feel like you can't even look at each other without being sassy, it's a sign.

All relationships go through tough spots, and that often means arguing until you figure it out. But if there's an ongoing problem and you eventually reach the stage where you sigh and don't even bother talking about it, the end is likely nigh.

"This means you have given up that your partner will change and you start asking yourself how important the issue is," Dr. Caroline Madden, MFT, a licensed marriage and family therapist, tells Bustle. "This leads to thinking about breaking up."

While no relationship is without its downsides, arguments, and disagreements, yours might be falling apart if you keep having the same fight over and over again, and can never seem to reach a draw. Over time, you'll only get angrier, and that isn't worth sticking around for.

If you find yourself holding up a proverbial magnifying glass as you look for ways your partner is wrong or bad or letting you down, take it as a sign. It could be you want to call things off, but feel like you need to find a valid reason first.

"Nobody wants to be blamed and become the bad cop," Celia Schweyer, a dating and relationship expert, tells Bustle, which is why you dig for negative traits, and then try to make a big deal out of them, in order to justify leaving.

If your relationship has run its course, you'll probably start doing this subconsciously.

If you still valued your partner, you'd call them immediately with both good news and bad. But "if you are solely turning to others for this, it could be a sign that your partner is no longer your safe space for support," Laura Goldstein, LCMFT, a licensed marriage and family therapist, tells Bustle.

It's fine to keep your private life private. You don't have to tell friends and family about every fight, or disagreement, or moment of confusion. And yet, you should pause and consider why you tell white lies and act like everything's golden whenever they ask how your relationship is going.

"This may be a subtle sign of denial," Goldstein says. "If you are withholding the full story from your most trusted confidants, it may be a sign that you are afraid that they may tell you the inevitable truth, too."

Ever notice that, whenever your partner starts telling a story or talking about something that interests them, you completely glaze over? That's because "you have stopped caring," Madden says. "You don’t want a conversation. You want to get out of there so badly, your mind is leaving."

Whether it's to avoid sex, or to avoid conversation, you close your eyes and act like you're sleeping as your partner comes to bed. "[This] is a disconnecting behavior that might indicate a relationship is coming to an end," Michael Hilgers, M.MFT, a licensed professional counselor, tells Bustle. "Doing this suggests intentionally avoiding opportunity for connection and intimacy."

Take note if it feels like you have to be or act a certain way, in order for your relationship to work.

"A good partner allows you to be yourself," life coach Kyle Elliott, MPA, CHES, tells Bustle. "No longer feeling like yourself around your partner is a telltale sign that your relationship is no longer working."

"Giving or receiving more negative than positive comments is a sign your relationship may be on the brink of a meltdown," Elliott says. "You and your partner should be praising each other far more often than you are tearing each other down."

So if it feels like you can never say or do the right thing, because your partner is always right there with a mean critique, you may be better off calling things quits.

"We all need time apart sometimes, but when you notice yourself regularly delaying coming home from work, extending grocery shopping trips to have a break outside, or encouraging your partner to do their own thing all the time (not because you're happy for them but because you appreciate having the house to yourself), it could be a sign of trouble," Dr. Adi Jaffe, a mental health expert, tells Bustle.

Do you feel like your partner is beneath you? Do you catch yourself saying mean things?

"This is a dangerous one and is a common theme in the work of [relationship expert Dr. John Gottman]" Jaffe says. "Contempt is a clear sign that you're heading into dangerous water unless you change course quickly."

If you spot these signs and think your relationship that is falling apart, talk to your partner. It may be something you can come back from, if you so choose. But it may also mean it's time to move on.