Still Working Together

We are still communicating regularly with the ex over my stepdaughter.  After all these years of tension-filled communications, it is nice to actually be working together for my stepdaughter right now. 

Will it last?  I have no idea.  Will somebody say the wrong thing and tick the other person off?  Who knows.

Is it finally over for good (by "it" I mean the tension, hostility, and bad feelings between both homes)?  It sure would be nice.