Wow. Political correctness at its best: bring on the witch hunt! What if he replaced girlfriend with boyfriend? Would that still be sexist? His joke was not on the sex, but on the fact that she was his life partner. You know couple stuff. I kind of feel sorry for him because he was not intending to offend but just be funny. It would be sad if he lost his job over that. I find Atlassian's response makes sense since they are walking on eggs with such a topic.