I think she doesn't like me anymore?

I’m 18 she is to, we went on a dinner date and at the end of it we kissed. Later on thruout 2 to 3 days that i've been texting her she has taken a really ******* long time to respond to my texts. Now i’m not sure if it's because she just doesn't like texting or she isn't interested in me anymore.

She is quiet shy and awkward and i'm loud and outgoing.

I know it seems like i’m just overthinking this but her not engaging in my texts kind of hurting me :/. I really felt the connection between us but now i feel like moving forward.

The day after our first day (sunday) i asked her if she wanted to go on a museum with me. She replied really ******* late so it was already too late. I also tried to friend her on fb but she hasn't accepted my friend request. Maybe i went to strong? i didn't spam her or anything just was my normal self.