AITA for crying over being asked out?

I (22M) have an online friend I've been talking to, "Ana". (20F). Ana asked me out. I don't know how to be a good boyfriend or what to say. I'm an anxious mess who's been largely unnoticed by girls even in high school. Because of this, I said "Sorry, no," even when I did want to be asked out. I cried about it because I felt bad but also because someone actually seemed to want me.