You should definitely be getting more support from your spouse . My suggestion , however , would be to own your size as best you can . As a very average sized guy myself I can certainly understand the jealousy towards you . I know you ' re sick and tired of it , but I ' m thinking if you were to roll with it or even instigate the attention to your size yourself it may go so far as to make the jealous family member uncomfortable enough to stop talking about it . Seems to me he jokes about your size as a sort of offensive defense mechanism to negate his own small stature . Now I maybe totally off the mark the brother may become more hostile to the percieved threat . I think it would take the wind out of his sails though .