Ok, I'm getting tired of the 'omg sexism claims, so it's time for some real sexism that's actually justified, so...
PORN!
What are the two main things men want from porn?
Big tits and arses. So, when the majority of women want to feel attractive, they mean they want men to find them attractive and say so. Here's a tip tho, folks, ribcages aren't sexy, or our graveyards would be a lot busier than our nightclubs.
Which you don't get from salad caused skeletal figures.
Jo Brand (UK comedian and fat woman) made a damn good point, not hugely funny, but very fair, (and no doubt this will be called homophobic now), that the big problem with the fashion industry is that there's so many gay men in it, designing clothes that they'd like to see on the figures of teenage boys, which is why you rarely see any models that have any feminine curves.
So from a very male perspective, tits and arse are mainly fat, but you're just never going to hear a man go, 'I love you honey, but your tits are too big, can you get on a diet?'
Also, to step away from the sexist bit for a moment, if we've fallen for a girl, we've fallen for her, and of course looks are a big part of initial attraction, but 10lbs either way isn't gonna change you from the object of our desires to swamp monster, so go have a cupcake on me!