Is it a turn on or turn off when you find out a woman has been with a bigger guy?

Is it a turn on or turn off when you find out a woman has been with a bigger guy?
If you were dating someone and found out their ex was really big, would that excite you or make you jealous/insecure?
It would be a turn off. And I would be concerned as to why she told me she'd been with a bigger guy... is she implying that she's disappointed about what I've got? I'm big, but not huge, so if she's saying she wants huge, well, I don't have that to offer.
 
I think I would like to know and would be a turn on. It’s a bigger turn on if a girl says I am bigger than her ex too