I have full lips. He has thin lips. How are we gunna kiss?

Sooo I'm going on a date with this guy I like on Saturday and we've never kissed before. Problem is, I'm suuuper nervous about our first kiss especially cuz I have full lips and his lips are pretty thin! Won't it be super weird kissing him? I don't want it to be like I'm sucking his face off :O help!