I found this online and removed the ones that did not apply, I still have 20 that make me wonder.

Signs of a Cheating Spouse:
2) Mutual friends start acting strangely toward you. (They either know about the cheating or have been told stories about what a horrible wife or girlfriend you are.)
3) Your cheating husband or wife stops confiding in you and seeking advice from you.
4) Sets up a new e-mail account and doesn't tell you about it.
6) She joins the gym and begins a rigorous workout program.
10) Begins to delete all incoming phone calls from the caller ID.
11) Deletes all incoming e-mails when they used to accumulate.
12) He becomes "accusatory," asking if you are being true to him, usually out of guilt.
16) The cheating wife stops wearing her wedding ring.
20) He/she fairly suddenly stops having sex with you.
25) Shows a sudden interest in a different type of music.
27) Has a sudden preoccupation with his or her appearance.
28) Spends an excessive amount of time on the computer, especially after you have gone to bed.
34) Your spouse seems less comfortable around you and is "touchy" and easily moved to anger.
35) You get calls where the caller hangs up when he or she hears your voice.
36) He/she loses attention in the activities in the home.
37) Your intuition (gut feeling) tells you that something is not right.
38) He/she has a definite change in attitude towards everyone in the home.
40) She has a "glow" about her.
41) Atypical erratic behavior.
46) The telltale sign of a cheating spouse? Having to ask that question in the first place.