School system has left me a bit uninformed.

I was just wondering what’s going on down there...when I’m making out. I’m relatively young—20. And due to personal reasons I plan on waiting to have sex until I am married. When I make out and it’s good I get wet. I know that’s usually something that happens when you orgasm buuut that isn’t common making out. Is this normal? Is this is more just natural lubricant? My body preparing for the sex it thinks is coming?