So, I've never had a girlfriend, so needless to say, whenever I talk to a girl, I become kind of "clingy". Not in a way that's noticeable, like just texting them all the time, but kind of mentally clingy. This girl I met at work a few days ago gave me her number, and I keep overthinking. I'd text her and of she didn't reply right away, of get all worried she doesn't like me anymore. I'm supposed to hang out with her tomorrow night, and I'm worried I'm gonna be too shy. I was outgoing when we first met, and when I mentioned in text to her that I'm shy, she even said "you didn't seem shy with me" but now I'm overthinking. Any tips?