How do I stop stressing over a girl I like? I met a girl this week and she's great! We spent the last 3 days together having a blast. I have to admit we both fell into it pretty hard and I haven't been in a relationship in 3 years so I've scared myself with how easy it's been.

Still, I have this stress or something eating at me and I'm not sure what it is. Am I just overthinking things? Is this just nerves?