After 2 years the chemical attraction fades for many actually most people. It may be that your H loves the initial buzz and when the day to day living kicks in he backs off emotionally.
You say you have 2 kids from a previous R maybe he has started to have some resentments over them not being his but realises if he told you this you would understandably be upset.
Was he married before or had a long term partner? Did he leave someone for you? It may be he is going through a mid life crisis and is questionng everything in his life right now.
Sometimes even having feelings for someone else can cause a withdrawal emotionally not necessarily an A. Tou have to decide how long you are prepared to continue in a R without any affection. I lived without for years but now that my kids are older would never tolerate this again.
I would rather live alone and struggle financially than to live with this mental cruelty. Did it for years don't do the same as me sort it out now and if he makes out it is you being unreasonable stand your ground you are in the right wanting affection in your M.
