Basically I received a face book message from someone I don't know claiming that my fiancée (who I've been with 8 years and we have a son) was on a dating site.I didn't believe her and told her to prove it..and wow I wasn't expecting what she sent me,screenshots of his account..he had sent her his number and d* pics (that were taken in our bed)we have since separated because I can't trust him...he doesn't think he's done anything wrong,he's blaming me for the split but I can't trust him.any advice