Okay so get ready for this...

So I am in a relationship and I have some past events from my last relationship that happened that I pretty much don’t trust some females...Here it is...

I had found out that my now ex best friend had given my bf at the time a bj twice while we were in a relationship...so I have been in my current relationship for a year and I don’t like certain females around my boyfriend and he gets mad that I feel this way...now I have caught him multiple times snap chatting sexually with girls that I know,I have confronted him every time and he always says “I do it because I feel like that’s what you could be doing and I don’t want to get hurt” or “you don’t make me feel appreciated enough because you don’t do enough of the cooking”...so am I wrong for feeling how I feel?He knows I don’t trust him with his phone,I know he hasn’t physically cheated only because he is a terrible liar ... what should I do?