<human>: Summarize the given text in a few sentences.

I met her online. We've been out on four dates in three weeks, I stayed at her place on Friday night and had a lot of fun. I really like her, she likes me (I think?!?) - this is my first serious attempt at a relationship in a few years and I am fucking nervous as hell at this point that I'll fuck up by being too attached or wanting to make too many plans too quickly. Help me reddit! How should I proceed with grace here to take this to the next level of seriousness. 

She was going out with her girlfriends last night for dinner and I messaged her that if she didn't have plans afterwards we could chill and watch a movie but she never got back to me. I had also suggested when I left her place yesterday that we could do something today but she's out with her girls. Am I just freaking out about nothing at all (I don't even know what  I am freaking out about)? I had my heart broken really badly four years ago and I've been very careful about committing my feelings to someone since then, so this is all unfamiliar and scary territory for me.
<bot>: We've been on four dates, spent Friday night sleeping at hers, we're moving in the right direction, how do I escalate? I could be a hopeless romantic but I am scared to overdo it.