I think the most important part of the marriage is the intimacy....if there is not that much of it in your relationship and you want more, and he's not that into it, then that's a big red flag.....I'm afraid to tell you that some guys are just not that into xxx....
I got divorce for the same reason....I was so unhappy and couldn't understand his coldness....First I was thinking there is something wrong with me, but now that I'm out of that relationship and I went out with other guys, I figured out it's just depend on the guy....some guys are not sexual and my ex husband was one of them....He was barely initiating sex and he would never sleep in the same bed with me....I was so unhappy.....
The thing about the guy that you like.....I'm sure you can find connection with another guy too....I'm telling you out of my own experience....when I got separated, I start dating a guy and I thought he's the one....but he wasn't....I was devastated when he broke up with me.....then I met another one and it was even better than the previous one....but different....No two relationships are the same, but each flower has its own smell
Get on your feet and stay strong....take a deep breathe and put smile on your face....think what you want to do.....think about it.....if you want to leave your husband, then do it....It will be a long recovery process though, but then there is hope to find somebody else.....and if you want to stay with him, then tell him what you want....email him....write a letter....
best wishes
Marjan