I'm confused, NEED HELP

I thought my relationship would be perfect, but no. He's so jealous, he makes me problems with a guy that a year ago, we used to going out like friends but pretending to be more than it. So many times, he almost fucks off the relation, once he asked me if im still in love with Paolo (that guy), and i told him obviously no.

But the problem is... Paolo studies at my school, i see him everyday and im scared i'd fall in love again with him being with my boyfriend and i dont wanna hurt him.

Its very confused, i dont know what to do, should i break up with my boyfriend, clear my ideas and decide the best option¿, or continue with my boyfriend and be far away from Paolo...¿¿

Pd. Paolo is still in love with me.