Can we foster love here!

I've been in a very complicated relationship with this boy since the beginning of January (beginning of winter quarter, we're in college). We both really enjoy everything about our relationship: the company, the cuddling, the sex, the emotional support, everything. The only problem is that neither of us feel like there's any forward motion or "falling in love". Now, a little over an month and a half ago we had a really shitty weekend where it seemed like there was a huge imbalance and he was way less invested than I was. There was a lot of crying in my part and serious talking, and we worked it out that we both were in about the same place and everything was better from there. We're calling is casual but exclusive dating. The problem is that now, even though we're really happy with what it is, there isn't any forward motion and it doesn't feel long term. But at the same time we'd both be devastated if it ended. He has only ever been in super deep serious relationships and doesn't have any experience with this casual stuff.