I need to break outta my shell around him but how?

there's this guy I like and we've hung out a few times were still getting to know eachother but sometimes I can be such a nervous wreck around him he's not that shy of a person he's pretty outgoing and I think he likes girls that are like that I'm trying but it's hard I always say stupid things and even when we kiss it's akward cause I'm so nervous I cant relax! I'm usually not like this. I don't know how to just be myself, I had a alcoholic beverage before he came over once thinking that would help but it made me even worse than normal lol (I think I might have social anxiety sometimes because I can get like this before job interviews or meetin new people. Any tips?