One sexual relationship in 32 years
I've only had one sexual relationship in the last 32 years (I should point out that it has lasted 32 years - it wasn't a one night stand 32 years ago) and I have to say that I would regard that as a success. I also sit firmly in the middle of the BMI chart despite being tall.
One thing that this research does show is that being plump, while it may or may not result in short relationships, does not result in no relationships. However, in a country where almost everyone is overweight, people don't have much choice other than go thirsty.