He is a chubby chaser. Some men dig a big, soft woman. I had a buddy in college, fit and athletic and always picked the chubbiest girl in the room. These two seem a good fit, but the bikini pic was too much.
I heard long ago that then chubby women try harder to please.
I went the other way and married a drop dead beautiful girl that should have been out of my league and have never regretted it. Well, every other day we have not regretted it. We have reached our 48th anniversary and I must confess that we both have weight problems now, but the viscous cycle is that health issues hamper exercise.