I have love jitters! help!?

I have a crush on a guy and he knows we've been texting and talked in person but we haven't hung out yet and i think he likes me back...which is great but i have this crazy anxious feeling in my gut! and it kind of hurts and i can't stop thinking about him and it is driving me crazy i can't even concentrate on anything because i keep checking my phone i wish i could like him without this feeling . Is this feeling normal or am i crazy ? what can i do to feel sane again??