Nervous to makeout

I’m so nervous to makeout with this one boy I’ve been talking to. We have only done small kisses but I’m scared I’ll be a sloppy makeout person. He also likes kissing roughly and I just recently told him that he needs to take it slow with me, but then he told me, “you’re the only girl I’ve waited this long to do anything sexual with.”

I really hate that he said that because what if he gets bored with me? How can I spice things up without making a complete fool of myself?