I was talking to a girl as we were leaving the gym today and I did my usual "this might seem a bit forward, but I think you're cute. How about you give me your number and we get to know each other better?"

She then said she has a boyfriend already. So I said, "no way.. I knew I couldn't be the only fan."

We laughed a bit and then she told me that I seemed cool and she would love someone to workout with sometimes. So she gave me her number.

I texted her "Hey __! Save this very important number, haha. It's __ from the gym." She said to me "Hi ____!!!! Haha I will"

Should I say anything back, or leave it be to appear like I have a busy life or whatever?

Edit: I can't figure out what I did to make that line bold, but that's not how I text, haha.