How to kiss?

Ok I know....it’s a stupid question. I’m 15.... and I’m going to the movies with my bf.

{(Please don’t say “ew it’s gross and disrespectful to kiss in the theater” I know... . . . . . I plan on kissing him after the movie)}

I’ve had my first kiss with him about a month ago...and it wasn’t good. At all. Cause neither of us knew what to do. Like how do I move my lips/ what do I do?

Please no hate...I’m just a girl trying to figure out how to have a relationship 😂