I'm not going to point any fingers (at her) but she REALLY should have locked your intentions down BEFORE she spread.
Some chicks are cool with giving it away. I dont judge. But I'm always amazed at the ones who are willing to do the deed, knowing that they are looking for LTR (or something like it) and they cross their fingers, uncross their legs, and hope it will all work out the way they want.
I just want to scream TALK IDIOT. In mt experience, the moment you start talking about what you are lookig for, and ask him the same, you learn where his head is at. It's so simple!
You say nothing, he says nothing, you have $ex. You get whatever you get.