Kyrie Eleison! Lord have mercy on you and your wife and your SACRED marriage!
If you don't mind, here are a few humble suggestions which help many couples who go through such patches:
Have you seen a priest for marriage therapy?
Have you decided to spend a little holy and blessed time apart, such as taking a week to go on a spiritual retreat or a monastery?
All marriages go through some tough times, and some times when even those who are the most loving couples need some time to be apart and to unstress from life's many worries (in a blessed way)--whether it is at home doing various different activities, or unwinding in a particular way which is pleasing (television, computer, books), or in a wholesome outdoor or sport activity, etc...Ofcourse, that doesn't mean hanging around with umarried buddies, drinking, partying, etc...
Going to church together is always a good thing, and the Holy Spirit takes over afterwards to make those bad feelings (of the evil one) go away...
May the Lord, through His Most Holy Mother hear your anguish and bless your marriage again...
In Christ,
Alice