Girl advice. Pitiful, right?

I've observed that most of you all here have significantly more life experience than myself - and some outside insight pertaining to my situation would be helpful.

Basic groundwork: me and this one girl have hung out 4 or 5 times, and there is very, very, very obvious sexual tension and chemistry. I'm not going to bore with details, but we get on extremely well all things said (we made an inpromptu 15+ hour drive last weekend and had a blast, long story).

We've both been up front - I like her, she likes me, and she's half-seeing someone, in that they've been on-again,off-again and its iffy on her end. That's fine and all, and I'm entirely capable of respecting that.

Well, I do think there is potential there and I dont know the context for how on or off or whatever they are, but I know she's interested - and I'm not shy and am a pretty damn confident guy. As such, I intend to just lay it out and see what happens. I'm not going to linger and hope or play games - I dont do drama.

Something to the effect of: "Hey, I like you - and you like me, its completely obvious. Now, I can respect the interesting relationship dynamic in your life, but there's something here and you should make yourself available to pursue it. If you've got a problem with me wanting that, you should just kick me out right now (or similar, location sensitive for sure)"

It's a bit blunt, but it makes my position clear, gives her an out (which I'll respect in full), and fully exudes confidence - no?

Can I get some input?

Excellent. All cleared up then.

Thanks so far guys. Already have done the kissing part, and has gone real well, no rejection whatsoever. Trying to get it out of limbo-stage where it stands right now. Like I said, the sexual tension has already been physically breached, I did that date 3 and 4, pretty consistent and very well received. But I'm not going to sit in limbo and wait and see either, thats what I'm trying to dodge.