[Zoner]

Well, you've got to rationally analyze your chances with Girl A, the primary target. If you think you have a good shot of being with her and that asking her out on a date won't destroy your friendship, then go for it.

If hooking up with Girl A is a pipe dream and you like Girl B, ask Girl B out for a coffee or a weinerschnitzel or whatever you crazy krauts do.

If Girl B is cool and you like spending time with her, don't let your infatuation with Girl A prevent you from having a good time. At the end of the day, if you don't hook up with Girl A and you've already passed on Girl B, you'll be left with your dick in your hand...again.

Good luck. Wear a condom.