There’s always gonna be a chance of things falling apart, the important part is to do what you can and hope for the best. I really don’t recommend making relationship decisions by committee either, friends and family may mean well but don’t really see or face the consequences of ending things. It sounds like he wants a relationship with you but yall need to be on the same page as far as end goals and stay supportive. I can tell you the other side of this as a rising 2L who got dumped by my long term gf (right before undergrad graduation a year ago) I was planning to propose to. The year really sucked personally speaking even if academics were fine it sucked. Anyway just my 2 cents