I get that he's hurt but the fact that he has been with 21 people before you and you've been with 3 changes that for me. My ex lied about his count (he lowered it from 30 to like 10) because he knew I was a virgin and knew I was conservative about sex and didnt want to be with someone who had been with a lot of women. I was very hurt for a long time but because he was honest and I could tell her was remorseful when he told me the truth, I forgave him. Its not like you cheated on him. What I've learned is that most people tell white lies about themselves when dating or tweak the truth very slightly to paint themselves in a more favorable light. For some people like me, this is annoying and unnecessary, for others its not a big deal. I think its odd that he would want to break up with you just for going away for 6-7 weeks. It sounds like he is using that as a defense mechanism like "if she does cheat im going to be hurt so lets break up so I don't have to risk going through the hurt", or he is very immature and looking for a way to be with other people while you are gone. He might not be a bad person but at this stage in his life doesn't sound like hes mature enough for a serious relationship IMO. Trust me when I say (I Wish I could tell my 21 year old self this) you will eventually find your fit. When you do, it will not be this difficult or emotionally taxing