Do diets ruin relationships?

i've been on the up day down day diet for 5 months and have lost 40lbs yet I'm still 45 lbs heavier than megan fox- that 'ideal' weight where men turn heads and don't find you invisible. We live in such a shallow society! But lately, I've got more unhappy and obsessive and just want to eat normally again but scared of putting the weight on! I want my boyfriend to be with a thin me, not a big me who people feel sorry for.
Do diets ruin relationships?
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