Recommendations for a boyfriend with a medschool bound girlfriend?

If you don't marry before you leave, then she will be worried about her bf while he's deployed. But if you do marry, she'll be worrying about her Husband - and that is far more stressful. Stress can produce a walling-off effect, but that is rare. Most people, especially women, reach out to others in times of great stress for comfort. And they tend to seek out someone conveniently close to them - a friend or colleague, usually male. The truth is that there is no need for you to marry at this time, it's just something you want. There are few advantages to marrying now, as opposed to later. You won't be having children, establishing a combined household, or any of the other 'perks' that marriage provides. If your love is strong enough to survive the many changes coming your way, then it is strong enough to survive - period. You will reunite, or you will go your separate ways - whether you marry now or not.