I feel so stupid asking this.

Okay so this is so 10th grade, but I have no clue how to French kiss. My ex kissed me like he was an octopus with a big ass tongue and made me French kiss him. So I've had a bad experience (or two) with it. But now I kinda want to with my bf now (and yes he's a good kisser😏😏). So, don't call me weird, but how do you do it?