Struggling post break-up

Hello all! This is my first post so it’ll be long and a bit all over the place. So me and my ex-bf had been dating for a little over a year. It was the kind of relationship where we believed we would end up together. We frequently talked about our house and kids and all that and he even gave me a promise ring. We rarely fought and if so it was resolved quickly. We had so many fantastic memories that just hurt now. Anyway, about a week and a half ago, he came over (seemed normal all day) and said he’s not sure we should do long distance. The thing is that I’m going 4 hours away to college and he’s still in high school. He said that he wouldn’t be able to go 2 weeks without seeing me but that making me come back would hinder my college experience, thus he didn’t want to do that to me. So we ended it. It BROKE me and I’m still struggling. He said if in 3 months I still want him I can show up and he’d take me back in an instant but I feel like he’s lying and idk why. We exchanged I love you’s, had one last hug and cuddled and recounted the relationship. It was painful. I brought back his stuff and we’ve been no contact (this is best for me so that I can detach). I just feel like everything reminds me of him and I’m still struggling. We haven’t blocked each other but we’ve both been respecting no contact. I just feel in my heart that our story isn’t over yet but it’s hurting me to hold on. Any advice is appreciated and I’m welcome to clear anything up.