Always treat your co-parent with respect and compassion. A metaphor for co-parenting might be, "Treat them as well as you do a convenience store clerk." You want to get in and get out with as little hassle as possible.
At the moment I am in a perfect relationship. I wake up , go to sleep, nap, walk, play tennis, write... all that, I do all those things without considering another soul. I am in love with myself.