Please help!

So me and my boyfriend have been together for 9 months. I’m on a college program over here and that’s how we met. We were also each other’s first sexual partner. I’m leaving USA next week to go back to England for my last year of university. For the last couple of weeks things haven’t been too good for us as I’d say it’s mainly my fault as I’m stressed about going back home and I basically don’t want to. Since the beginning of our relationship, we’ve said that we would make things work while I’m away for uni as I’m definitely coming back after I graduate. But for the past week he’s changed his mind about that situation and thinks that we should put our relationship on ice for the year until I return. I believe the main reason for this is because there’s this new girl at work and she keeps hitting on him and I think he’s also interested in her too. I’ve also seen messages to his friends about how they’re going to get together as soon as I leave as she will still be around for the next couple of weeks before going back home. Also his friends are telling him that he should do it too. He also told me that sex basically means nothing when you don’t do it with someone that you love. Also what if he finds someone else permanently while I’m away. As I do not plan on sleeping with anyone even though “we are still young and should enjoy ourselves”.

Just need some advice for this whole situation. Like should I agree to put it on ice for the year? As he’s not agreeing for us to stay together as it would be “too much pressure”. Or there’s also another option of ending this whole thing when I leave so that I don’t get cheated on at all?