I have recently come to the view that the behavior that I will be aiming for and aim to receive is support. Finding a partner where our individual projects dovetail will be essential to get and receive such support, in my view. It is not just a matter of allowing each other’s project but a fully integrated support system for our individual projects.
This opens up the whole conversation as to how to find such a partner, with a focus on 

1. Individual project

2. Support of the project

3. Dovetailing our project together