Oh boy...
Ha. Seriously, I'm not trying to be a dick or anything but I don't really see much wrong with it, assuming the girl isn't 12 or something. But beyond that, I think an outraged reaction from something so harmless is far more indicative of an unhealthy society than a passive reaction of "whatever" in this case.
hmmmm... I didn't look at it the other way. "So what if she is sexually active, and you are another partner for her. Does it matter?"
That's pro feminism, isn't it?
Feminism isn't a unified front by any means, and Sy had a pretty good overall definition, but yeah, were you to say "This ad is horrible! It's depicting this young adult as being sexually active and having more than one partner in her lifetime!" at a feminist event, you probably wouldn't be walking out of there alive.
Honestly, I don't think there's a lot of feminists making complaints in there. And if they are, they're the militant, out of touch, 70's style feminists. It seems most of those complaining at the blog are either a.) White Knights, or b.) have their head in the sand. Of course, this is going off the assumption that I still have where the problem people are seeing is that an adult of consensual age has had more than one sexual partner in her lifetime.