If your boyfriend told you this, how would you react?

If you have to change physically to make him happy then he is so not the right guy for you. Attraction is based mostly on how you view someone immediately, and for guys if the physical attraction is not there nothing else will be either. Not to say that guys are shallow *grin* but if he was not initially attracted to you there is nothing you can say or do to change that...let him go nad move on to someone who thinks you're "hot"