All great things must come to an end. The love in your relationship has died, but you probably still care alot about your partner. If you cant stand to be with her/him anymore the best thing to do would be to move out unless the kids are still young. Technically your love didnt die, it was just reborn as two kids that you must nurture and help out in whatever they need. I would suggest you help out the kids, you lived your life now help them start theirs.