I love my girlfriend, but since we started getting serious she has been slowly letting herself go. I've become increasingly less sexually attracted to her as this has happened. She is deeply in love with me, but if there's nothing I can do about her gaining more weight, I feel like I need to break up with her. She's only 28 and I'm certain as she gets into her 30's she's going to gain a lot of weight with her poor habits. Any tips on how to handle the situation or to confront her about her weight?