I completely agree regarding the dim-witted people! Really off-putting, isn't it.
Regarding my friends, yeah, they are depraved, but so am I But the groping only occurs when fooling around, playfighting or just pretend-bullying each other. Sometimes, someone gropes and that's when A goes into serious mode and tells them off

So I guess I should update that, since quite something has happened in the past few days.

Girl A has gone completely stale. She's in a relationship now with a friend of mine, but somehow, I'm relieved that I don't have to deal with it anymore since I was kind of putting our friendship to danger by gaming her. Also, the brilliant relationship we have on stage might have fallen victim to sex, so I guess I'm fine with this. Also, considering I'm dealing with it quite calmly, I guess my attraction to her wasn't much more than a bit of a crush.

Girl B, however, is a pleasure. She's providing me with constant ego boosts since I can perfectly see how well my text game is working. Note that I currently don't see her in person, and if so, it's by chance at the railway station just for a few minutes. She initiates often, I don't even need to freeze her. She's throwing shit tests at me occasionally (although I don't think she's doing it consciously)... Let me give you an example, this conversation is actually happening while I'm typing these words:

(translated form Swiss German)
HER: You reply unusually often for a guy haha
ME: Yeah, I think I should admit it now... I'm a woman.
HER: OK that doesn't surprise me, I could see it coming
ME: The handwriting too... And I dance. What kind of man dances anyway?
HER: Well, I don't. Does that mean I'm a guy?
ME: Yeah I think so.
HER: but but... I don't want to be a man!

and so on...

She also sends me pictures every so often, frequently showing some cleavage. The last one was a picture of her, her cat and quite some cleavage. She texted "Look at these two cuties..." I replied "Yeah, but the cat is cute too!" That's basically my scheme, I add a twist to most things girls text me.

But of course, trouble's not far away. Another open stage night is coming on Thursday; I'll be the host, as always. Girl B is coming along, definitely going to make out with her again, keeping it casual. But here's the problem: my ex is coming too. About a month ago, a bit longer, she broke off contact completely and unfriended me on FB. I recently ran into her at the railway station after an assessment for a job. She later emailed me because of this, long story short, she said she's ok with being in touch again. A close mutual friend however told me she isn't over it yet, not at all. How should I handle this? I don't really want to make my ex jealous, that's just immature. But I think there will be trouble... Any suggestions?

Not surprised to hear this. Confirms my hunch that she wasn't attracted to you. Not surprised to hear this either... The way you communicated made it seem like you weren't really into her. She likely felt this. Women's sixth sense. First objective is to keep your ex from fucking up your game with girl B. So try not to end up in a situation where you three are together, or where your ex can see you with girl B. Everything else is secondary. My personal philosophy is that you can't be friends with exes. So don't try to befriend her.

_________________
Before she can respect you, you need to respect yourself.

Yeah, in retrospective, you were right all along, probably.
That situation might be impossible to avoid. It's not a big place, and both are most probably going to approach me. Regarding the being friends or not, I can't really avoid her, since we have many mutual friends, close friends even. The easiest option would be to just keep my hands off girl B. But I don't really want to let my ex restrict my behaviour just because she decided to show up at one of my shows before she can handle it. Right now, I hope that my ex leaves right after the show, but it seems like a clash is not avoidable...