<human>: Can you provide a brief overview of the text?

So I installed Tinder a few weeks back, got some matches. Got 2 girls that were interesting to me. Now Girl 1(18F from title) and I met up at her house a few days back. We made out and had some foreplay action but nothing more. She dropped some hints that maybe I would have another girlfriend(this word exactly) in 6 months when we were talking about some of our plans in life.
When I left that evening, we had some more kissing action and discussed when we'd see eachother again.

Now I have no idea whether she considers me as a boyfriend or not. We can't meet up this weekend since we're both working and it wasn't really discussed.

But here comes the fun part, I already had a date set up with Girl 2(20F) from Tinder for tuesday that's coming. Now I'm really in a pickle, obviously me and Girl 1 really hit it off, but I'm not sure if she wants something serious or a casual fling. Should I just ask her what the deal is between the both of us? Cause if she's in it for the long term obviously I'd have to cancel on Girl 2, cause I'm not into the whole dating 2 girls at once.
<bot>: Went out with Girl 1, don't know if it's something serious/casual. Do I straight up ask her so I know what to do with Girl 2?