Very good post and a point often overlooked.The only problem could be that she really shows you in and outs you just won´t have with a maybe later partner-which could lead to unfulfilled expectations because you experienced.. lets call it "advanced" sex with this woman.
what i mean is...not every person is that great in sex things and many people just don´t care about it. and when you have someone later in your life who you really are interested in or even in love with and you discover that well...the person is fine with standard 10minute sex you could end up very disappointed.
other than that...enjoy the ride and be safe.
Subsequent relationships can seem dull in comparison...