I (16M) am in a talking stage with a girl who’s (16F) and i feel like i’m gonna mess things up again. Please help?

Hello! I recently started talking to this girl who started the talking stage and i’m worried that I’m going to mess up like I did before (the exact same thing happened half a year ago)

She reached out to my friend to get my number, and I said sure why not. Ibhavent really said anything yet because i feel like things will go just like last time. The same thing happened last time where we both liked each other but i guess i was just too afraid, and i feel like everything i say or do is wrong and im messing up. Does anyone have advice or has been through a situation like this? Thanks.