I can't take it anymore...

So me and my bf haven't had sex in over 3 months... I do give him oral sex but he says it's his weight... he reached 430lb. We met when we both were fit... gym time all the time... soon we both were gaining weight... we started eating out a lot.. gym was out of the picture. we both have dealt with weight problems since we were young... our weights was like a yo yo up down all the time... but we both got fit prior to meeting each other.... so I know we can lose weight... but it's harder this time.. When I met him he was 300 fit muscle weight.. he looked bomb... I also gain weight so I don't feel attracted... we both decided is time to start again.. we are doing ok but like I said is hard to keep motivated because we get out of work tired... he is a tow truck driver.. its fast past so his weight is not helping... I'm a preschool teacher not as hard work but you do get stress once in a while.. but I love my job.

So I feel I have more sexual desire than he does. He says it's his weight. I tell him there are other overweight ppl that still do the Deed. Am I being inconsiderate demanding he still needs to have sex with me, to satisfy me. How can I encourage him... even if he is overweight he does have a big 🍆 (sorry tmi) that's why I want it.. but he doesn't have energy and I am getting frustrated with this situation. All I do is ride him.. I want to try new positions