Thin boyfriend + Thick girlfriend, piggyback rides or carrying- why?

Why do guys (especially thin ones) insist on trying to carry their girlfriends who may be heavy set? They say their girlfriend is “not even heavy” and “let me carry you” and sometimes just end up falling really bad, if they can even manage to lift her off the ground a little bit. Can’t they clearly see a heavy person is a heavy person? Is it an insecurity on his part? (About his own lack of muscle mass) Or trying to comfort her about her own weight insecurities? Or is it probably both?

Thin boyfriend + Thick girlfriend, piggyback rides or carrying- why?
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