Weight gain causes breakups?

Half of the men interviewed in this slightly unsettling poll said they'd break up with a partner who gained weight.

Surprised?

We've all dealt with weight fluctuations, and I don't think it's fair to assume that a temporary 10-pound weight gain means you've embraced a life of Big Macs.

That said, it seems like weight gain is rarely "just" weight gain.

Significant weight gain often coincides with changes in someone's lifestyle and/or mood. Those elements are definitely likely to spur a breakup.

Under what circumstances, if any, would you break up with a partner who gained weight?