You suspect one of your relationships has become terribly toxic, but you're not so sure: maybe it's just a weird phase. Change your path and see what happens. If you've wanted to get in shape and eat right, just do it. If your partner, friend, mate or spouse recoils and constantly downs your efforts, you've entered the danger zone. Communication should work out any resentments or fears; if not, this relationship may be over before you know it.