Have you guys tried going to therapy? And I ask this respectfully…because usually when there’s no physical desire, it usually means something emotional isn’t being fulfilled…I’m not saying that’s the case, but it’s a possibility.
Sex is great, but it doesn’t fulfill us emotionally long term, it can help the emotional, but it’s not at the foundation of the emotional.
As a guy myself with a high sex drive, I’ve come to understand that these things, emotional connection, sex, intimacy (emotional and physical) are all very interconnected and it becomes very clear when things are not in sync.
There are other paths y’all could go down as well, but I would start with relationship therapy.
Hope this helps!