I had a girl over on tuesday to spend an afternoon. We had a nice talk and kissed before she left. She wanted to stay and hook up but she had a commitment. So we agreed to see each other later.

We've been talking (a few messages a day) the last few days and it seems to be going well. We are seeing each other on saturday.

It does seems like the conversation has been cooling down gradually since its very hard to keep the spark for multiple days so I eventually just let it and I stopped responding today.

I was getting bored and kind of worry she was too. I don't want to talk all day, I just want to see her on saturday. So I wanted to ask...

In this situation, how much contact would you keep with a girl you have plans with? How would you maintain the interest without being too invested or seem like you're not interested? What"s the sweet spot?