How do I get my bf to touch me more while we're making out?

When my bf and I make out, I caress his back, neck, head and arms but he doesn't do anything like that to me. He touched my while we were making out one time and he tried going under my shirt but I let him know that I wasn't ready for him to actually feel them. So how do I get him to grope me while we're kissing? Also, I'm his first girlfriend and we're both of age.