He's 6ft4 and big build so carries the weight reasonably well, but his bmi is 29, and needs to lose 3 stone to get within a healthy range. He is 46, has high blood pressure and other weight related issues. He knows he needs to lose weight but isn't really doing anything to try. I'd like him to look at options which might help but don't know how to broach it without hurting his feelings. We've been together for a year. How would you approach this?