I'm in a fairly new relationship with a guy that is now going down hill he hasn't spoken to me much since the weekend and now I have just found out that he has been back on the dating site that we first met on for some reason he sent me a message on there even though there was no need for him to do that because we had been texting each other. He's trying to blame me for it by saying that I'm looking for excuses to end us over one mistake but it's not just one mistake he was sat next to me at the weekend and flirting with someone on Facebook and showing me the messages like he thought he was doing nothing wrong because to him it's just banter. So AIBU to think that you don't do that when your in a relationship and it's not my fault like he is trying to say it is.