If things are good at home, you're having fun together, having regular sex, then things are probably fine. But if you are having none of the above, then there might be a problem.
Check out some changes in behavior that could mean he's looking for love elsewhere.
Sudden Changes in His Appearance
If your husband starts transforming into a different man, it may be more than a mid-life crisis. A man who drastically alters his clothing style, appearance or body shape for no apparent reason may be having an affair. Perhaps the other woman has suggested he grow a beard, wear his hair differently or use cologne. If he's dressing differently for work, there may be a coworker he's trying to impress
His Attitude Towards You Dramatically Changes
Changes in his mood can point to more than just stressful times at work. Men often get fidgety or irritable when they're supposed to be in two places at once. If the other woman demands more of his time, he may start arguments with you so he can storm out and rendezvous with her. If he's not only picking fights, but also criticizing you for things that hadn't bothered him before, like your appearance, eating habits or intelligence, it's probably not about the way you chew your food or the 5 pounds you've gained, but really about another woman.
He's Become Distant
If your spouse avoids being alone with you and your conversations become purely superficial, he could be pushing you away because he's growing closer to someone else. Likewise, if he holds back the warm and fuzzies (i.e. he stops saying 'I love you,' no longer holds your hand in public or barely hugs you anymore), he could be cutting off his feelings of affection for you, so he can focus on his new partner without feeling as guilty.
Guilty Behavior
When a man feels guilty, he may become unusually affectionate or attentive as a way to mask his affair or relieve some of his guilt. On the other hand, some men may avoid their partners when they have something to hide, no longer making eye contact or attempts to communicate.
Secretive, Unusual or Unexplained Behavior
If your partner becomes elusive about his whereabouts, something's probably going on. Other indicators that something's amiss? The computer screen changing when you walk into the room, hushed telephone conversations or calls taken outside, strange body language when in the company of the new gal at work, reluctance to take you places with him and his friends, and general unexplained behavior that feels suspicious, are all clues that your partner is straying.
You Never See Him Anymore
If he's suddenly never around, he may really be busy at work or he may be busy with someone else. He could be spending the time away from home with her. Although the other woman usually accepts whatever fragment of time the man can give her at first, she typically begins to demand more and more of his time.
He's Frequently Unavailable or Unreachable
Are you suddenly finding it hard to get in touch with your significant other? if he's frequently unavailable, it may be because he's with someone else. This is how he can spend time with the other woman without having to rush home. It's his way of making sure he doesn't have to worry about looking over his shoulder constantly and answering to you.
Your Gut Tells You Something Is Going On
If you think he's acting strangely, hiding something or seeing someone else, don't ignore your instincts. A woman's intuition is the best thing we go by in our business. She knows all of her man's aches and pains, when he is mad, happy or lonely, and when he's there in body but not in mind. She knows when something is not right.
Both more and less interest in sex can signal infidelity
If he's suddenly rebuffing your advances when he never turned you down before, he could be satisfying his sexual needs elsewhere.
Meanwhile, a sudden increase in his sexual appetite could also be the result of infidelity. Engaging in sex with a new partner can rev up testosterone, increasing his overall drive.
A New Woman Enters the Picture
If your significant other repeatedly talks about another woman you've never met, there's a good chance she might be his new lover. While you may assume no man would be stupid enough to actually bring up his mistress with his wife or girlfriend, experts say many men do. "Sometimes cheaters take the strategy of being half truthful because in some ways it's less of a heavy burden if half of the cat is out of the bag.
He's Overly Defensive
"Why are you asking all these questions?" "Why do you care where I was?" "I was watching the game at Mark's. If you don't believe me, call him!" If these defenses sound familiar, your significant other could be up to no good. When a man becomes overly defensive in response to questions about his whereabouts or behavior, it's a huge sign that something is not right, because otherwise, he'd laugh it off!
He Accuses you of Cheating
If out of nowhere your partner accuses you of cheating, it may be because he's been unfaithful. Once a man sees how easy it is for him to become involved in an outside relationship, he begins to view his partner under the same moral microscope. Accusing you of infidelity is a way to deflect his own guilt and poor behavior.
Just remember, while one of these signs does not make a cheater, if you've witnessed a few, it's time to have a talk. Even if he's not having an affair, addressing issues in your relationship early on can prevent future infidelity.