Did I tell you I'm in love with a girl with a boyfriend -- and that she loves me back?
That sounds a little complicated.
Maybe she's tired of him.
I can understand how you have these feelings. You can't expect her to drop their partner and start dating you. She might not want to give up everything she has for so long.
She acts very friendly to me.
Maybe she's just friendly. There are literally billions of eligible women in the world. Why pursue a situation that's fraught with complications from the get-go?