I understand that you are feeling left out, but you have got to stop keeping score (I get six hours, SHE gets 24 hours). It will drive you insane!
Instead, figure out what the problem is. Is it that you don't feel the two of you spend enough time without distractions? Is it that you feel jealous that she found someone....and you haven't? Is it that you feel jealous that she gets time to relax away from kids and chores....and you don;t? Is it that you're worried she'll leave you for the new guy?
If you know what the problem is, it's easier to solve it.