I had an ex girlfriend who I was taking care of financially (not as an agreement) to help her with bills and stuff. I recently discovered she has been in a relationship with another boyfriend while she was with me. I have given her over 10K in money and gifts. I believe her and the boyfriend have been scamming me for money the whole time. Can I sue her? Can I accuse her of scamming and possibly prostitution? I say prostitution because every time we had sex, she'd always asked for money afterwards. I willingly gave her money but now I realize that money was probably going to the so-called "boyfriend." In my opinion, I think he was pimping her.