Commitment!!!

I have been single for like 4 years .. Iv been on a few dates and didn't work I wasn't intrigued.. Now I'm dating my friend of 7 years cause ( comfort zone ) and ( friend with benefits) but he's feels more for me than I will ever him!! I'm n medical school to become a surgeon and I feel that I will find a nice dr.  In my future ..  I know I'm gonna hurt him so what should I do ?? Wing it  lol or ....