Choices

I'm currently in a situation that places me in deep thought. Well after manuscript writing and the usual academic situations, I've currently sensed my end in the University, and like all ends, I want to finish everything, to leave few or no regrets at all. Leaving no what-ifs, hopes and dreams that could have been accomplished, done and left there. So after those things, it seemed that I left something one might call an unfinished business. I really don't like going back and forth in the University to finish that and maybe I really need to finish this. So what's this all about right?
Its what people call relationships that could have lasted a lifetime. And currently its the one of the many things that disturb me. Why? I promised myself, that if I go to med school, what goes in will remain until I got out, unless the other party says otherwise? Why? Its a career choice to remain single or to keep it right? Because it is too exhausting emotionally and otherwise to keep a relationship. To keep that bond that should have been there. So I keep Asking myself should I continue and try to make a bond to someone meaningful to me? All I could do is sigh~