In the season one episode, Shuttlepod One, Trip and Malcom are stuck together in a shuttle when they find that the Enterprise has been destroyed and they have very little chance of survival. Obviously, the Enterprise hasn't been destroyed. What Trip and Malcolm saw was actually the wreckage of another ship that the Enterprise has been assisting when they lost their back door. But, until Malcolm and Trip can get back in touch with their ship, they have to hang out together. They don't know each other particularly well. They don't, at first, seem to have much in common. They get on each other's nerves for a while, have a bit too much of one another, and then, eventually, this happens:
In fact, we became so close that we did the whole Shuttlepod thing again. And again. And again.
At our last residency, I came in from my recent cross-country move (as sick as I've ever been in my life) and she was about a million years pregnant. We were both graduating so we had lectures, teaching workshops, and readings to deliver. We needed each other more than ever and, luckily, there we were, all the way to the end: