Journey beyond the well

The way to the well

I woke up that morning feeling uneasy, anxious, just like when I was about riding a roller coaster. I just knew something is up, something is about to happen I just did not know what and I did not know how bad and how crazy it would be.
My roommates called me and sat me down at our dining table. His wife busied feeding their 18 months old son (a blend of rice with beef stew), and he told me he won't be able to pay rent. I was shocked. My response was ok, "what's next?" "How are we going to make it to next month?". It went down south after that. Some nights they would argued. One night he bang on my door, made my dog barked like crazy and told me that he will leave the house (which he did leave the house, for a day). The next day I woke up, getting ready for work and found them sitting at the dining table having breakfast like nothing ever happened.
I don't understand how relationships work nor I am trying to understand it. How did you fight and broke a door and yelled and left and then came back and eat together like all the yelling, the banging and the destruction were all illusions. Maybe that what's called "love" for them. It was so consuming that they can't leave without.
What is love? So addicting yet so miserable.