I have just found out that my partner is getting and sending texts from someone she used to have casual sex with, don't get me wrong we all have history. The problem they are texting each other now even when we are sitting on the same couch saying how great it was I've been down this road before, first its these texts then it will be agreeing to meet for a coffee then a drink with "old work friend", then it will be "I'm staying with my friend I had too much to drink", do I confront her or just say good luck to them and not end up doin something more serious.