Yeah, it's not so much about the line as it is the vulnerable.
This will sound totally weird, and I don't mean to misappropriate a very serious word, but the "just take her" thing in the context of not being "really" intimate -- trusting friends, lovers kind of thing? -- seems sort of, well, date-rape-y to me. Taking advantage of. That doesn't come out right, but no other words come to mind at the moment.
