Re: What would you do?
From reading your post, it sounds like the main reason you're unhappy is due to your sex life ---or lack thereof. Is that why you're unhappy? If so...another poster mentioned that if he is putting long hours at work, then he may be stressed, not to mention very tired. Also, you mention that when you do have sex, it's not very satisfying to you. I have to ask--- no shout it out--- DID YOU TELL HIM THIS? He won't know if you're not satisfied if you don't tell him!
Yet, I have to wonder if there is more to your story. I wonder because sex isn't the be all and end all for a relationship. Yes, it is a very important part of a relationship--no doubt about that. However, here's something for you to consider---suppose you were in a relationship and the sex was great but then his health worsened and he couldn't perform anymore---would you think of leaving him then? Think long and hard about this because over time, this can happen with any relationship. Certain illnesses/diseases can leave a man impotent. v1agra and Cialis aren't for every man either.
So---again, is it your sex life alone that is the cause for your unhappiness or is something else going on? Did you perhaps enter into a relationship knowing that you weren't really in love (just liked him instead)? Did you perhaps enter into a relationship with him because he made good money and you didn't want to be alone? Sorry if that is harsh, but it needs to be asked and only you--after some soul-searching--can answer that.