Basically the title. I am wondering about this girl.
Most Helpful Guy
See if she is focusing all the time on a guy, but not flirting or talking with him. Watch her eyes. See if she deliberately gets close to you while she is watching a particular guy at the same time.
Don't get drunk while with her so you can be alert to these signals.
Also, if you suspect this, drop hints about it to her girl friends. They won't tell you, but you can tell by THEIR eyes and expressions when you ask about the girl and another guy, if something like what you suspect is going on.1