Please give me some advice F40 M 52 on my marriage situation

I 40 F was told by my husband of 8 years (10 years relationship) 52 M that he can’t get hard with me anymore because my breasts and stomach are saggy and it’s a turn off. I gradually lost 40 lb (gained to a medication I was taking)over 2 years, exercising 3x/week at the gym, plus classes; no bad habits, eating healthy. He’s been having problems with p$&n and mast&@@ion for years and kept on lying and hiding after I discovered things again. Not sure he is actually not doing it these days. Therapy (couple an individual), addicts’ groups he’s been going to for years don’t help him. S$&x has gradually decreased once every 2 weeks (I initiate most times). I asked him 2 years ago and he said he prefers fit, lean, young girls. I became fit, lean, can’t be young but doing everything I can with my appearance. I gave birth (in another marriage) 18 years ago and been having stretch marks and low breasts ever since and it hasn’t been a problem to my current husband before. P.S. I am exactly in the weight I was when I met him. I have been dreaming of breast lift surgery since I gave birth but financially it’s not an option, we struggle to pay even basic bills. What can be done? PPS. He’s a bit overweight now, he’s been on and off from fit to overweight for years.

PPPS: He added that when I was curvy 2 years ago the breasts looked more full and thus were attractive. I can’t be “fit”, “lean”; and “curvy” in the breast area at the same time! He can’t explain how those 2 combine. Also, when I met him 10 years ago I looked exactly as I do now breast and stomach-wise. He keeps on saying that “as we get old, things change”. etc.