Jesus said, 'If you look with lust in your heart' . It's one thing to notice beauty, another to wish you could 'get a room' with the person. I agree, women are responsible to dress in a way that does not lead men into temptation. (And, yes I am one!) Men are responsible to respect her choice to remain a virgin until marriage- and she should respect his, if he shares this is his desire.

As far as pre-marital, I'd give more lee-way to an engaged couple, but would also suggest they marry as soon as they can get enough together to get their own place. Intent to marry really is a key here: when couples jump the gun, but then marry, I think we are better off treating them with grace.