OG, welcome back. Sounds like the Friend Zone. I don't remember all of your situation, but could his sexual energy be somewhere else? Even if just virtually? Does he have a porn addiction?
Remember, the definition of a wayward spouse is one who wants his cake, and eat it to. If he is expending his sexual energy elsewhere, and yet looking to you for the wifely companionship and friendship that should along with that, then you need to start standing up for yourself.
Does he hide his phone? Keep it locked and close by? Is secretive with his usage? Does he take it into the bathroom? Is he in the bathroom for long periods of time?
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018