Has the passion in your relationship disappeared? Have hours of lovemaking devolved into 10 minute lazy displays of poor flexibility? Cheaters may find it difficult to share their affection with two people at full force. If you have noticed that your significant other is present but mentally absent, they may be spending their emotional energy elsewhere. Also, a cheater knows to make sure that they don’t ignore you or else you might get suspicious. But if their heart isn’t in the relationship, it will be difficult for them to be enthusiastic about being affectionate with you.