[tlhIngan Hol] expressing "relationship" and "relation/related"

For quite some time now, I've been wondering how to say "relationship", as in "I'm in a relationship with that woman", or "we've a business relationship". Finally, lacking a better alternative, I decided to be using the noun {boq} "alliance, bloc, coalition". .. Which of course, isn't ideal, but I can't find anything better. I'm still wondering though, how to say things like "what's the relation between these two events ?" or "how are these two events related ?". ~ bara'qa'