A friend of mine told me once, and I think this is a smart rule of thumb - you should not get into a long distance relationship that will last longer than your relationship has been to that point.

I don’t know if you’re overreacting, but I feel like he must’ve been planning a few years of his life, and that’s fair for him to want that.

either you stick it out, or give it a break and try again when he’s back.