I wonder why that would be.
There is hope. A nephew of mine, thin as a rail, married a heavy woman who was probably 300 pounds. At the wedding, I took a turn dancing with her. My relatives said half the time when they couldn't see me on the dance floor with her they thought she ate and swallowed me. The marriage only lasted one year before the divorce. Love wasn't enough to overcome the fat.
As for the niece (not a sibling of above mentioned nephew), her last date was a bartender. Guess he left her without returning for another date, after he got sober.