Kissing question? First time and I’m not sure how this is going

I was meeting a guy from the dating apps. But we both said we want a relationship. So every time we met up things were fine but we didn’t kiss yet. We didn’t flirt either. Then he just goes for it and kissed me but walks away to his car after. It was a quick kiss. The following time we meet up we kiss and it was smoother. But after that he asked me to kiss and he was doing it for a long time.

Each time after I saw him we follow the same kind of schedule where we talk, do something out, then we kiss. And he’s been doing it longer or adding in tongue. Especially recently he uses a lot of tongue. And this goes on for a while then he’ll hug me and say bye. I’m confused or scared because it’s my first time kissing. We’re both 20 something’s. And we talk normally then we go quiet or we hold each other a bit then kiss. A lot. And im a bit scared about things going further because im not ready.

A while ago i told him about my pacing but we met up maybe 9 times already. I wanna be in a relationship but we didn’t talk about where we are. We don’t do much other than casually talk or converse about every day stuff then we kiss. Should I be worried