Busy life = less sex but I'm horny

Nina
I love my boyfriend, he is the only one that makes my heart tumble; maybe because he was hard to get (yes, I like to "hunt" guys and not be chased by one). However, we both are busy as it can gets. He studies medicine and I study pre-med at another college, so we don't see each other every day. 
Before him I would constantly have sex, and yes with different partners. Now it is hard for me to control that sexual hunger that is inside me because I know I have to behave good. We haven't had sex in a while, more than a month either we barely see each other or we have no condom (even when I'm on the pill, he won't even have sex)! I tell him to finger me instead and he does it so softly that I barely feel anything, and he won't do an oral on me!! I'm about to explode... 
How can I keep myself under control or should I find an "ex-fuck buddy" ?
Please help!