Colleagues or friends?

Caught an episode of *House* last night on AXN, it was about a lesbian pair, one of them wanted to break up and was ill that she couldn't sleep for 10 days....however that part did not catch my attention!! it was more on Cameron and Foreman *side* story...Cameron accused Foreman of stealing her report on some research...she put the report on House's table 3 months earlier and Foreman got his on his table just 2 weeks ago and got sign off or something by House...a twist in the situation led Cameron thinking and approach Foreman at the end (of the episode) to make up and said they should apologize to each other blah blah blah....and here comes the best part...Foreman's reply -

10 years from now, when meet up at a church or at a convention (a long this line lah...can't remember exactly!!) we're just gonna shake hands, give a hug thats all...we're just colleagues not friends!!!

So what are you, a colleague? or a friend?