Often times couples get lured into a false  sense of security. We tend to take our partners for granted, and that's probably the worst thing to do.

Don't feel too flattered if your partner starts losing weight - it might be for somebody else.

People who suddenly start fighting the flab while they're in an apparently steady relationship are secretly preparing to drop their other halves, a study claims.

Happy couples don't worry about their expanding waistlines because there is less pressure to look attractive, sociologists claim.

Professor Thomas Klein studied the link between happiness and body weight and said the warning signs could include a sudden obsession with the gym or getting involved in sports and diets.

'When you are on the lookout for a new partner people try to be as thin and attractive as possible,' Professor Klein said.

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