Two observations about how it works when two or more girls like you at the same time, and they are friends with each other:

1) The first one you were friendly with will often extract a promise from her friends -- "Back off -- I get him first!" That's especially likely if her friends are better-looking than she is.

2) Ever had a situation when you asked out a HB and she brings her "still hot but not as hot as she is" friend to the date without telling you in advance? It happened to me many times, and it took me years to figure out what was actually going on. The pattern is, HB9, who I had asked out, brings HB8 without telling me in advance and HB8 sits between us and flirts with me. I always figured HB9 was testing me to see if she could trust me or not, so I never responded. After about a dozen go-rounds of this with various girls, one time I got mad and thought -- the hell with it. So I flirted right back with HB8. Ended up taking HB8 home, right in front of HB9's nose, and banging HB8. To my surprise, HB9 called me a couple of days later and wanted to hang out. She didn't bring HB8 with her this time, so I took HB9 home and banged her, too. I have pulled this off a few times since then, too. What's going on is, two best friends who are players share everything, including guys. So whoever is the least hot, you gotta bang her first -- you gotta eat your vegetables before you can have dessert, just to make sure they both get some.