I like this boy, and he likes me, but....

I reeeally really really am in love with this boy, and he likes me back. A lot. He makes me so unbelievably ecstatic. I smile every time I get a message from him. I can’t stop smiling when I see him, and I get so excited around him my body starts to shake. He’s kissed me (not on the lips, on my neck and forehead and stuff), and whenever we’re together in private we’re always less than a foot apart from each other. We have INTENSE chemistry, and whenever we see each other neither can look away. We try to spend as much time together as possible. We talk daily. The only cons about it, is that he has to sneakily come over to my house so his parents don’t know, we have a 3 year age gap, and he has a girlfriend.

I don’t want to hurt anybody in this situation. I don’t know what to do. Any advice?