How to feel?

Stephanie • eighteen. class of 2014. warner pacific college.
I was dating this guy for almost eleven months, and I fell so in love with him... First love, and first everything. But after we broke up, he found out that one of his ex-girlfriend was pregnant. And his reacted like he was hurt, and upset. And the way he reacted to our breakup was nothing... How am I suppose to feel? Pissed off, hurt, upset, carefree?