Hey I've been chatting with this girl from my class for a few weeks, we walk to train station after class and talk ont he way. I have been teasing her and making her laugh with some kino during these encounters and its been going good, we have fun, she laughs etc. I recently put my number into her phone and called mine from hers but it didnt go through so i didnt have her number so i was going to ask for it again next class. However it turns out she texts me the next day with some story about her night.

My question is this: We have sent a few texts back and forth since then during that day (yesterday) I took between 20-40 mins to respond to them poking fun at her for not being able to drive in the snow etc. Today I get this text:

Her :Wanna study together sometime this weekend?

Me:Ya sounds like fun I'll let you know what day is best for me sometime later this week.

Her:Wow, I didnt know you were so busy.

Me: Who Knew! Where? Library?

Her(2.5 hours later): I geuss we can discuss it when you are free.

What happened it seems she went cold all of a sudden?? Or am i misreading this? Im not really that busy this weekend but didnt want to commit to appear like im just doing nothing this weekend.

Edit: I've noticed that since i was taking a long time to respond to her she now has taken a similar amount of time to respond to me. I.E she started replying instantly and I wouldn't send anything back and then finally I would or she would send another text and I would respond. Now she seems to match my waiting time.