my boyfriend's getting a little bigger too and i know in the future it will hurt his health- what we do though- is find fun physical activities to do. we walk to the store or play this game called dance dance revalution- today we're going jogging. find ways to slowly introduce him into exersize- say that it's for you and make him do it too- but make sure it's someything you both can stick to and try to make it as consistant as possable at least everyother day...