180lbs at 6'3" is hardly a fatty. We go by BMI on this board and that is 22.5.  25 and over is overweight. He may not have been in shape, he may have been a bit skinny fat, but he was not a fatty. As pointed out by others, she is 5'10, very tall for a woman, and at 125 lbs has a slightly underweight BMI.  That being said, she has every right to do what she wants diet and relationship wise. She wanted to go from being normal, to being model thin. I am sure it got her tons of attention, He needed to have stepped up to the plate and raised his value as well, and he didn't. And thus he lost her. He also has every right to feel a bit of resentment over the whole ordeal. That is life and it sucks sometimes.