[Nyororin]

I would go. An invitation to stay with someone isn`t always a quick way of saying they want more of a relationship. I`d say the fact that she is bringing her boyfriend up at all is a hint in this direction...

IF she does try to move on to something more while you`re there - leave. If she is talking about her boyfriend and is willing to cheat on him, chances are she`ll do the same to you if you end up together.