Am I bad for having feelings for two people at once?

I had a brief fling with this girl, and she’s really great, but we decided we aren’t right for each other and said we were going to see other people. So then I met this other girl and feelings got really intense pretty quickly and I like her a lot. I hadn’t heard from the first girl in a while, but she called tonight and we talked for 2 hours and she said she still likes me... and I kinda like her still too? I don’t know what to do. Neither of them know about each other and I’m feeling guilty even though I haven’t done anything... did I move on too quickly?