Let me get this straight...you are overweight, trying to lose weight, asked for help and a fit, athletic,bodybuilder is willing to join in your cause...for free? Like, not only be a trainer, but a friend and support system for you? You realize you hit the jackpot, right? People pay hundreds of dollars a month to have someone like your guy there to help them every month. And this guy wants to do it for free. These guys have the knowledge and training on how to be healthy. Sure, it doesn't fit your model partner mold, but does it matter? This guy can give you tips, tricks, and ideas that a heavier partner couldn't. I say go for it. After all, the worst that can happen is you will lose some weight.