16 And if a man entice a maid that is not betrothed, and lie with her, he shall surely endow her to be his wife.
17 If her father utterly refuse to give her unto him, he shall pay money according to the dowry of virgins.
Men, Men, Men...
You cannot entice a woman to leave a bar with you unless you intend on marrying her. Unless, of course, you are simply being a gentleman and taking her to her home -- to drop her off.
If you have sex with a woman, you must marry her. Simple as that.
Why do you think there used to be shot gun weddings back in the day?
And fathers, if a man is interested in your daughter, it is best to go ahead and give her to him to wife. Two people in love will find a way to be with each other, married or not.
If you don't give her to him, then you owe him her dowry, anyway.