2 and 3, ldo, but it's more complicated than that. You need to really make her feel bad for coming onto your turf like that. Here's what I would do.
Of course you bring the hot girl. That will make ex-fiancee hosebeast want you more. So you relent and go home with her. She thinks she has won. But you've got something for her.
So, to recap:
1. Hot girl all over you at bar; EFHB jealous
2. Go home with EFHB.
When you get back to wherever she's staying (preferrable) you excuse yourself and go to the bathroom. Now this is important, so write it down. Take the lid off the back of the toilet and:
3. Take a dump in the toilet tank.
Once you're done destroying the bathroom, go back to her and make sweet, sweet angry revenge sex. Really give it to her. Like you hate her (cuz you do, right?). But before that, when the clothes come off, you need to "stage" your escape. Make sure you tie your shoes in such a way that you can slip them on and off quickly without using your hands. Put any small articles, like socks or a watch, in your pants pockets so you don't leave them behind when you flee. Your clothes should be in a compact pile with boxers on top for easy access before your escape. Everything else you just grab. This is very important, so write it down.
4. Stage your getaway properly
before the doin' it.
5. [censored] her like you're on a mission to destroy her insides.
Now, this is the most important part. When you're about to come, you need to pull it out and do it right on her face. Preferably, you'll hit her eyes, but if you don't it's not the end of the world. You then jump up, throw on your boxers, slip on your shoes, scream "Victory!" or something else that you might want to say and haul ass out of the room. The spooge all over her face will daze her to the point where you'll be able to get your shorts and shoes on without resistance. This is foolproof; as she is naked, there is no chance in hell she'll chase you. Run to your car, drive home, crack a beer and cackle with glee
So, to finish:
6. Come on her face, preferably in her eyes, but it's all good 'cause it's real degrading either way.
7. Yell in triumph.
8. Make your heroic getaway.
9. ?????????????
10. Profit
