In S1E15, Christopher is trying to convince Lorelai to marry him. She protests that they don’t even really know each other as adults. Christopher says, “Well… let’s get married and get to know each other as adults.” Lorelai replies, “Well, that’s very ‘Fiddler on the Roof’ of you.”
Fiddler on the Roof is a 1964 musical about a Jewish family living in Russia in 1905. Arranged marriages were the norm, and Tevye just wants to see his daughters married well. However, some of them prefer to marry men they love.