not hard for first time

so, i’m ashamed to write it, but on the other hand if i don’t do it i won’t be able to get help, there’s this girl i’ve known for 6 days, from the beginning i noticed she likes me, and the thing is mutual, but today we met to go out to eat, and after a while we made out, then we went in a bar and we continued there, after a while she begins to rub her leg on my inner thigh to make it hard, but a friend of ours arrived, so then we went to the bathroom and there something worked but not enough, I don’t know if it was the fact that I had anxiety being the first time or maybe it was because I consumed cannabis an hour before, but I don’t know, can anyone tell me what I’ve had, why and if there’s anything I can do about it?

edit: until recently we were in sexchat but once the photo was sent it didn’t come back as fast as usual

edit ¹: tomorrow I’ll have sex but i don’t know if i have to get ready mentally and how