you have to turn the other way. You can't be fearing she will fcuck OM, and then be all relieved when you can't find evidence she did. There might be an OM2, or OM3. I know how the waiting hurts, how not knowing cuts like a knife every single night that she is out unsupervised. The only solution is to look away and let her do her $hit. In time you will just not care anymore and that my friend, is a blessing. A genuine blessing.
Do not worry, you will get there, but take the focus off of her and onto yourself. Keeping focus on her can drive you crazy, and I am not just exaggerating... Do things for you, make yourself a man only a fool would leave. But do it for you, not for some pathetic ploy to get her back. She will know, trust me. And I am not talking out of my a$$, I know EXACTLY where you are at...