PLZ HELP

My husband is 28 years old .. his weight is 214 pounds ..he has cholesterol problems genetically so he had a heart attack before two years and we got married two years ago but since his heart attack the sex became not as before without cuddles without any intimacy .. he watches porn before the sex i think because of the heart beating going so fast during sex so this way is better than cuddle before sex ( i don't know )and when it got hard we have sex then .. at the begging i was upset about the porn and now i understand but i act like i don't know and he doesn't tell me anything and he avoids to talk about it i understood that by myself so ladies i want to ask does the heart issues effect the sex thing ? And if yes how can i get the pleasure during the sex or no solution for this and i should deal with this ? Btw in a month we just have sex once recently ! But most the time i lick his dick till he cum " sorry for the explanation " and when we have sex he all the time lay down and i do all the effort .. am not complaining i love him so much but i need recommendations and advices if you have to help me please ! And how the heart issues effect that !