Actually I am kind of worried about my current gf, she is 5'1 and can basically and does eat as much as I do, i am a 6'1 guy and 185 lbs, on the lean side. She has gained some weight since we started dating about a year ago. She used to be fat but had mostly gone back to a normal weight when we met. She recognizes that she is gaining weight and wants to work out but I think it's her eating that is actually putting a lot of extra calories in her diet. I am not too confident that 5 yrs down the line she will feel comfortable again and simply go back to her old self