The story's like this: this evening I went to a party in my town. A girl (HB8,5) I once met in a bar agreed to come too with a couple of friends, and I KNOW she was into me. First time I met her, without asking she gave me her phonenumber and started suggesting us taking dancelessons! So anyway, she came with some girlfriends, and we chatted a bit, but I ended up kissing one of her friends! She didn't make a really big deal out of it tonight (told me we were divorced though...) but I think she's gonna be really pissed in the morning. What do I do to fix this situation? I'm not looking for sex or anything, I just don't want her to be mad at me! Another (more PUA-technical) problem is that the girt I kissed gave me her number, but I don't think I've met the comfort standarts yet (we were joking around, but there was no investing, and she had to get back to her friends everytime). I think that's cause we did it in front of her other friends... is there any way to fix this later on?

Thanks in advance, people!

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"Give a man fire and he's warm for a day. But set fire to him and he's warm for the rest of his life" - Terry Pratchett

Remember you live in YOUR own reality...so if your comfortable with dating multiple women at once, then the women will also be comfortable.... the only thing is let them know that your seeing other women and dont try to hide the fact otherwise youll come across as shady... if your open in the first place, other girls should be fine... they may become jealous, but that usually leads them to liking you more...but be careful, cuz jealousy is a powerful emotion

In addition to what TMT said...
If you want to game the 2nd girl, if you don't feel like you've had her create any type of investment in you or created a feeling of comfort before kissing you you're going to encounter the problem of buyer's remorse. I don't have enough experience to tell you how to get past it once you've created it though...