A woman whose jeans are too tight(Rex Features)
It may well be that now you have settled into a relationship you no longer feel the need to diet or exercise as much as you used to, and the very thing you always wanted (a boyfriend) is causing you to pile on the pounds (the very thing you didn't want).

Read on for our top reasons why finding a man can mean losing your svelte waistline... and what you can do to get it back.