Three weeks is nothing. This is a true story that happened to me earlier this year:
So I met this girl on a group bicycle ride thing. we seemed to have a pretty good vibe going, so I went for the phone # and got it. I tried a few times to get a date set up but it never happened.
Now, I didn't completly next her because I would see her around and she always seemed interested but it wouldn't go any further.
I had other girls I was pursuing the whole time so it didn't really bother me. We were just always cool with each other.
So this goes on for like 6 months. One day after we went riding together, I decided to try a little kino to see what would happen.
As I was saying bye, I said "let me get a hug". For whatever reason, it changed everything.
Within one week we had our first date which ended up in a goodbye makeout session. It escalated to dating and sex for the next few months.
I've always known kino was a powerful thing, even years ago when I was totally clueless. I don't know why I took so long to give it a go with this one chick, as I usually work it in much sooner, but in my mind, I think anytime is a goog time to try!
Better late then never