Ok so I was at a friend's house and HER BFF was over. She was kinda cute and had a funny and optimistic personality. We all joked around (other people were there, it was a party) and went to her room. The BFF (name not disclosed) start to sit down next to me. Then she did a little thing where you tickle someone by pinching their sides. We laughed and stuff. Blah Blah Blah I left she smiled at me then I text my original friend (not the BFF) and she's all like "She wants you to text her" and now I have the BFF's number. We are texting but I really don't know how to tell if she likes me or not and how I should go about with it.

By The Way the original friend DOES NOT like me, we are just friends, so she would be cool with it.