26. Your mate has been acting emotionally distant and withdrawn but when you ask about it, he doesn't want to discuss it and becomes very protective of his privacy.
27. Your mate seems disinterested and distracted during sex.
28. Your mate talks in her sleep and mentions the name of a particular person on more than one occasion.
29. Your mate seems startled or confused when awakened. This uncertainty may be caused by not being sure which bedroom and which lover's bed he or she is in.
30. Your mate's behavior is such that your friends begin asking you what's wrong. Close friends and family members often will notice tension or discord between the two of you before you are fully aware of it.
31. Your mate easily becomes offended when you make normal and natural inquiries and may demand to know why you are checking up on him or her.
32. Your mate's sleeping pattern changes considerably from the norm and may include unexplainable exhaustion, restlessness, frequent nightmares and sleep-talking.
The 32 emotional signs your partner is having an affair comes from 180 Telltale Signs Mates Are Cheating and How to Catch Them.