1. Does she tell you to go out with friends rather than her?
2. Does your gut say she is cheating on you?
3. Does she avoid taking calls in front of you?
4. Does she mix up her stories?
5. Does she cancel plans often?
6. Has she cheated in the past?
7. Has she started working out more?
8. Does she hide her social media accounts/activities from you?
9. Does she avoid looking into your eyes when you confront her about changed behavior?
10. Does she purposely explain why she is late even when you don't ask her?
11. Has she recently started to complain about you?
12. Has she changed her look lately?
13. She comes home after a night out with her friends. What does she do?
14. Does she seem to hide her phone?
15. Has she stopped being open about her feelings?
16. Does your girlfriend/wife tell you about her day?
17. Is she making plans for the future with you?
18. How many new pieces of clothing did she buy in the last 30 days?
19. How interested is she in having sex with you?
20. Did she suddenly start to spend more time at work?