Did I mess up this opportunity?

I was talking to this girl for well over 3 weeks. Things were going really well snap chatting , lots in common etc. she would call me cutie and wondered where I was if I hadn’t responded. She had gotten out of a long term relationship for several years wasn’t looking for anything at the moment but wanted to keep talking to me getting to know me etc.

I let it go because I wanted to give her space. She said I’m such a great guy and that I’m honestly the best when given her space advice over a week later I realized I really liked her I’m such a slow burner when it comes to this and reached out to her and no reply.

I feel like I messed up it was also her birthday last week. It’s a lesson learned on my end. Any thoughts would be cool because now I have stomach butterflies for her.

Did I mess up this opportunity?
Post Opinion