Guy is even less experienced than me?

Charlie • Bass playing bad ass with all too many questions
There's this boy I've been talking to and we plan on hanging out and going on dates soon, but neither of us have cars so it's tricky. 
Anyways that's not the point. 
I'm 16 and he's 15, both sophomores in highschool. I've only ever kissed a few people, he's never even cuddled with a girl, let alone kissed one. 
He's really sweet but I feel like I'm never going to be able to do anything (not sex, I'm young and asexual) because I'm used to guys making the first move. I'm also afraid he's not gonna like me in person because I'm kinda heavier.  
Any suggestions on how to move slow but still have some fun? 
I really like him and we have tons in common, he's a real sweet heart :)
Any advice is appreciated!