My mans arms are thinner than mine....I'm not overweight or overly muscular. He's an ectomorph I'm more of a meso/endomorph so I know it's bc he's been a FT student for the last 2 years while working PT and doing his portfolio. He hasn't worked out in 2 years basically. He always told me in past I should go to the gym when I was feeling down about myself. I want to tell him I'm losing my attraction to him but I don't want to hurt his feelings.