Should I stay or should I go?

He loves me, he loves me not, he loves me... but does he really?

I feel used, abused and many other things. When we're together we're in love, no one or nothing can tear us apart but any other time he acts like he doesn't want to be around me. I feel like we're not even together half the time. He is under a lot of stress and pressure right now and I'm not sure what to do anymore.