<human>: I love my boyfriend and we have a fantastic relationship. However, he was a larger guy to begin with and gained a bit of weight over the course of the relationship. I know we could have a better sex life if he lost weight. Although this may be a bit selfish to say, he would also be incredibly good-looking if he lost weight. I am also worried that his weight is going to come back to bite him when he is older or that his weight will completely spiral out of control. We are both at college and eating at the dining halls makes it harder to make healthy choices.

Before I get completely crucified for this post, he has expressed some frustration with his size and that he would be happier if he lost some weight. I have tried asking him to join me in the gym and set a good example in my own eating habits, but it hasn't worked. How do I discuss this with him gently?

Can you provide a brief overview of the text?
<bot>: My boyfriend of two years is a larger guy and I want to help/encourage him to lose weight. How do I approach the issue with sensitivity?