Overcome, I want you to know without a doubt that your size has nothing to do with your ability to be loved, to be good in bed, and to be desired. Your confidence has a lot to do with that, not your size.
Yes, go to a gym, yes, eat well, because these things are good for your health and will improve your ability to cope with stress, disease, and build your confidence. But its the confidence that is sexy.
Whatever is attracting your H to this druggie is so superficial and is a reflection of the fact that there is something wrong with him, not you. There is NOTHING wrong with you. Sure, go ahead and lose some weight. Do it for YOU. Do it so your kids have a healthier mom. Do not do it because of what your stupid MLC H is rebelling and thinking with his dick. Honestly, you are too good for him. You can do so much better. And I think you will.