I need relationship advice

For maybe a little over a week, I have been in the talking phases with a girl I liked, but yesterday she pulled something on me I didn't really like, I told her I needed time away and she was very respectful, and later cleared out the confusion, but still my feelings are meh. I told her I would need a few days to maybe stop feeling that way, but ultimately things may not work out. She began to cry, and telling me that I am doing something to her heart, and all that, she feels disheartened, that I am always in her mind. And that she loves me so much. As a result of that reaction my heart began to hurt. I told her I felt like she is trying to guilt-trip me, and I did not appreciate it one bit, then she apologized and said it wasn't her intention.

In the meantime, there is another girl that I seem to have good chemistry that I have known for a while, but we weren't really talking at all, as she was in the talking phases with another dude and had been gone for a month, but, after it didn't work out, she started to approach me, and I got to know her better last night. We spent a lot of time together yesterday. She is not the kind to jump quickly in a relationship, she is not a fan of people who catch feelings for her too quickly. She seems interested tho.

What do I do?