I read the RP advice about making threesomes happen and it's pretty hard. (So I am not holding out for advice like that.) So instead, how do you usually isolate a girl from her friend if there's just 2 of them out together, and they're engaged with you, following you around, do everything you say etc. In this case one of them doing everything she can and reciprocating flirting etc, responding very well to teasing and the rest, the other pretty engaged with me but not overtly sexual and I wasn't giving her much attention. I got the number of the first, but she was leaving the next day. They were staying super close too. (We were near my place). The first was giving all DTF vibes possible.

Any tips? How would you have dealt with it?