<human>: So I [17m] made out with a close friend [17f] which we have been in a "flirtationship" for about 6 months now, and I found out that she actually really likes me and she wants me to ask her to a dance. Let's call her "Girl 1." I am interested in Girl 1 but I don't want anything serious at the moment.

I was planning on asking a best friend [17f] "Girl 2" to a dance before everything happened. Since I found out that Girl 1 likes me, would It be terrible of me to still ask Girl 2 to the dance? 

I feel like if I don't ask Girl 1, I would feel very bad for leading her on; she will probably take it the wrong way and think I don't care about her at all. I already promised myself that I would ask Girl 2, and I really want to ask her because I know we would have a good time; now I'm not too sure what to do. 

Should I ask Girl 1, but go against what I intended to do in the first place? Or should I ask Girl 2 which will most likely end things with Girl 1.

Can you condense the text into three sentences or less?
<bot>: my close friend really likes me and wants me to ask her to a dance, but I was going to ask another friend that I know I would really have a fun time with. What do I do?