How do I get my boyfriend to start working out again?

My boyfriend has been active his whole life, wrestled and played football in high school and was always very cut. He works construction so his never "out of shape" and his a broad guy but he used to have a lot bigger muscles. When we started college he just got away from working out. I model so I am always in the gym. But he refuses to workout with me and he won't do it on his own. How do I get him to start working out again without being mean about it?
How do I get my boyfriend to start working out again?
Post Opinion