More importantly, don't let what may just be a bad case of jealousy taint your perception of her. Reading her the wrong way or jumping to conclusions can permanently sever a relationship; get all the facts before you confront

Sad but true: there is no such thing as a perfect relationship. So although you might be in love with your better half, there's always a chance that she may be cheating on you. Contrary to what your macho side may think, you might not be the center of her universe after all.

Remember: women pay a lot of attention to detail, so if she is cheating, you'll have to start paying attention, as she'll likely cover her tracks better than a practiced thief. Here are the top 10 signs that she might be spreading her love around and, while they may not all imply that she is in fact cheating on you, each is definitely a warning that something's amiss with your ladylove.

She detaches herself from your family:
The fact that she no longer wants to attend family functions or hang with your friends may be indicative of "cheater's remorse" on her part. She may feel guilty enough about cheating as it is, and having to face your friends and relatives may be just another painful reminder of her sins. Hence, the less she immerses herself in your circles, the less mental anguish she'll have to endure.

No more harmonious communication
Gone are the days when the two of you could communicate with such harmonious precision. Lately, every sentiment you express sets her off, and she finds any excuse to lash out at you.

If such an about-face sounds familiar, she may be subconsciously trying to justify her little tryst. Nagging you helps eliminate or at least ease her nagging guilt. So if she habitually begins to point out your every flaw, you may want to get to the bottom of what's really going on.

A mysterious friend inches their way into the picture.
A telltale sign that your woman is cheating arises when a mysterious friend inches their way into the picture. Whether it's someone she claims is a co-worker, or an old friend from "way back," she keeps this friendship under wraps and is hesitant to share any general details about them, much less introduce you. And it doesn't take a Ph.D. to figure out why.

Refuses to answer even the simplest and fairest of questions.
Always be suspicious of anyone who refuses to answer even the simplest and fairest of questions, or answers questions only after repeating them back to you (usually indicates a mind's search for a lie). Be wary of times when, rather than reveal that she got home at midnight, she begrudgingly asks, "Why do you want to know what time I left the coffee shop?" If she gets defensive about disclosing information that she used to volunteer without hesitation, she may be hiding something... or someone.

A shift in her daily priorities.
If she is involved in a hot and heavy romance elsewhere, you'll definitely feel a shift in her daily priorities. Suddenly, there are no more implied Sunday dates at the movies, or something always "comes up" on dance lesson Thursdays. There is a tendency for most philanderers to schedule meetings with their new flame as often as they can, resulting in a complete disregard for previous engagements

You may like her just the way she is, but that won't stop her from trying to dazzle her new fling.
You may like her just the way she is, but that won't stop her from trying to dazzle her new fling. And just as you tried to impress each other in the beginning of your relationship, so too will she have a sudden urge to improve her style, change her makeup, and alter her physical appearance for the other man. So while her desire to look sexier may be one thing, not caring about your opinion on the matter is quite another.

She doesn't say "we" anymore, but rather "I."
A big sign that something has gone awry comes when she breaks away from a dependent, two-person unit and becomes more autonomous. She doesn't say "we" anymore, but rather "I." Moreover, she does more things on her own, and stops consulting you about future plans.

In short, she conducts herself in ways that hint that she no longer needs you to hold her hand. Whether she's hoping you'll leave her , or is simply looking for more time to lead her "double life," it's safe to conclude that she wants you out of the picture but can't build up the nerve to leave you.

Making love is now an iffy situation.
What started out with the two of you passionately making love at the spur-of-the-moment is now an iffy situation, whereby you're rarely hitting the sheets, and are doing so only if and when she feels like it.

On a slightly more ego-bashing note, she may suddenly become bored by your performance, and appear to be thinking about someone besides you when you do make love. Cheating may be wrong, but you can't deny that unlawful sex is usually more exhilarating. So if you can no longer satisfy her sexually, someone else may be rubbing her the right way.

Disclosing her itinerary to you at the last minute.
She may claim to no longer have time for any extracurricular activities with you, yet the minute one of her girlfriends calls, she has one foot out the door. Either that, or she's been "going away on business" one too many times. And when she does leave, her whereabouts are sketchy at best, and you are somehow always the last to know.

Disclosing her itinerary to you at the last minute and overlooking your plans in the process can mean many things, one of which isn't that she's forgetting, but rather leaving you out.

Nags you about absolutely everything.
What could be worse than a girlfriend who nags you about absolutely everything? How about one who stops noticing that you're even alive? Just as number nine is one possibility, the opposite could be yet another clue you need to watch out for.

All at once, she doesn't care if you don't want to go to the ballet with her; she'll just find somebody else to go with. And whatever opinion you may have, be it about how she looks or how you're feeling, is met with a tepid response. In other words, she doesn't place the same importance on what you think and what you do, especially on things that directly affect the relationship.