Idk if im totally in love with my boyfriend anymore what do I do??

Okay so me and my boyfriend dated once before but he was ready for a long distance relationship yet so we broke up six months later without dating anyone else but with my walls fully up he ended up breaking them down and i fellback in love but i feel like i still have a wall up even though he has proven himself trustworthy and loyal and we see each every month at least once and were about to be dating for 5 months and i'm still holding back on sex any ideas why i feel this way??