Wish the advice was practical for my situation but husband’s interest in boom, boom as you say is rare and clearly he is a different breed of cat er, man. Almost always it’s up to me to push the issue but after 16 years of marriage I’ve just come to face the fact that sex isn’t very important to him.
I'm going to echo the advice of those who say to get his testosterone checked. This isn't normal.
Testosterone does good things for men, and without it, we suffer many undesirable effects, including the loss of interest in boom, boom, but also increased body weight, difficulty concentrating, decreased bone density, increased risk of injury, etc.
The answer is usually exercise and diet changes, together.
exercise is self explanatory, but diet changes aren't to cut out fatty foods and eat soy.
I'd suggest the following
stop eating wheat
eat more nuts, almonds are especially good
meat, red meat especially
fat and cholesterol are important for both brain and testosterone production
Sometimes its a viscious cycle, men gain wieght, stop exercising, decide to lose weight and cut out fat, which decreases testosterone and makes it harder to lose weight. Start with the exercise and eat some steak and shrimp with a salad, skip the rolls.
I've been able to increase my testosterone, nearly doubling it, from a relatively normal 450 to almost 800. I feel great, and stronger, faster, and more productive at work than ever, I feel like I am 16 again. I talked a drinking buddy into trying it and while he doesn't have any test results, he reports increased libido, alertness, and a general feeling like superman.
your mileage may vary, but getting a testosterone blood check is the first step, but don't get drugs (shots or cream) until trying diet.
---- warning, you have reached the end of any potentially useful advice, it was hard to be serious for so long -------
If that doesn't work and he wants to outsource the boom boom, I still have slots available on tuesday afternoon and thursday morning.