Does weight really matter? Does it effect a relationship in anyway?

Anonymous
I know this question has been asked time after time, but does a girls (or guys) weight really matter in a relationship? Or does it even matter at all? I'm asking this because I really hate my body (5'4, 128 pounds), although my boyfriend loves it. He said he doesn't care if I'm 400 pounds he'll still love me. He says my body is perfect, and I don't doubt that he's lying, but I can't help but to feel that guys are obligated to say things like that to their girl. To cut this short, does someone's weight really matter at all?
Does weight really matter? Does it effect a relationship in anyway?
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