Get into see a marital therapist and a sex therapist. You both get in touch with New-Life Live. In Chicago it is on WYLL AM 1160. New Life is hosted by pastors,psychiatrists, and psychologist. The work with issues such as yours. Get to their every man's battle and every woman's battle. This is what happens in porn. Masturbating and he is focusing and fantasizing on the woman he watching getting sex. This gets imprinted in his head just like a animal gets fixated on the first living thing it sees and thinks it is it's mother. A duck thinking a dog is it's mother. While he ejaculates oxytocin, the closeness hormone, is secreted in his blood stream and he is hooked, turned on by it more than seeing you naked and romancing him; hence, the low libido. Just picture heroin hitting the pleasure sensor in the brain. Just one try with heroin he is hooked. The pleasure center overrides the brains time management and urge process so badly one becomes an addict almost immediately. Over-time it is the same for porn becoming an addiction. Some proponents say it is o.k. once in a while for couples to spice thing up, but some don't.
Since he is a visual person he likes to see you dress up. I hope with the normal Victoria Secret stuff, buy I prefer the sexy items from Sonoma, JC penney, macies. Doesn't have to be a super, duper lacy, just pretty, colorful, a little frilly, us guys are visual. You need to force the issue and most likely need to set up a program that you have sex regularly to reset his libido to you. He needs to do his part with chores, listening to your needs and treat you as a loving partner with affection. He needs admiration and sex, you need emotional love to get interested in sex. The therapists will help you with this.
Read everything and listed to all the audio books on CD's by John Gottman Ph.D from the year 2000 on. It goes into everything you need to survive almost issues. He also has retreats that deal with relationships issues of all kinds. I am 52 and got diabetes, mid-life crisis form losing a career and financial issues, and not giving eacch other what we need emotionally.I am getting a mutual divorce for these reason. I lost my mojo and I miss the closeness and making love. One thing that dropped is feeling admired, sexy, and ambition to romance. I have to try, do it, go through the motions with more touching, talking, massaging, getting enough sleep, and not working 7 days a week. Best thing to do is to become supportive, loving, understanding, patient, forgiving, and don't bail emotionally. Put the emotion into your husband and he too for you to communicate on an emotional level, more so than ever.... Try.. Good luck!
Make arrangements to do the above to help, both of you need to do it... Have sex willingly if in mood and often, but make bids and mention what you want to feel loved, help him out. Nobody is a mind reader. On the sexual level, I am not no counselor or endocrinologist, but from what I read you may get a head start to reset his oxytocin imprint clock. By the way... find all porn and discard it. Block all cellphones, T.V. streaming services, and your computer, and tablets from porn. They sell the programs for all these items. Watch him like a hawk and limit his chances for viewing... He can only break the habbit if he wants to. Try to salvage to the point you cant' tolerate no change in behavior or libido, then try once more time just a bit longer. If they has not been a correction and improvement in all areas of your relationship you did your best and nobody would fault anyone for leaving. Men or woman alike. Good luck.