I heard some interesting stuff when speaking to her on the phone last night and I assume she had guy with her. I've been with her for 3 months and she says and does everything to please me. However the thought of what I heard is playing on my mind and I think she's sleeping with someone on the side even though her hole is not 'loose' when we fuck. I'm terrified of being cheated on but I don't want to show that I'm insecure. What can I do without appearing crazy/falsely accusing her of anything?