My friend and I went for dinner last night and at the end of it, the waitress clearing our table started a conversation with me and my friend. We chatted for like 5 minutes, especially about the fact that we both moved to the city we currently live in a few years ago. When she left, my friend insisted she was flirting with me. I didn’t believe this at all, but my friend kept insisting. 

I thought we’d leave it at that, but my friend secretly left my Instagram for her without telling me (I’m not upset about it ahaha, she just knew I wouldn’t do it myself). She only told me after we left the restaurant, and the girl followed me later.

I’m so out of my depth—I have zero game and don’t know how to talk to girls. I’ve never done anything like this before (not the DMing girls part haha, the texting-them-out-of-nowhere part). Also she’s so so gorgeous and definitely out of my league—I have zero clue how to go about this.

Do I DM her now?? Could this be a friendly thing, like if she just followed me because she wants to make friends??? What do I say??