I think this most recent episode is the 3rd such easter egg I've noticed. I have binge watched the show so I can't tell you exactly when the other ones have dropped and there may have even been more than 3 but in Season 3 Episode 1 there's a line "you had me at give me your glock." A clear reference to you had me at hello. There were a few star wars lines referrenced as well. I believe "I love you." "I know." was dropped somewhere in season 2. I wish I had been keeping track and I also recommend the show if you have Netflix.