Friar Lawrence says that they kinda need to chill a little. Especially Romeo who is either super depressed or crazy happy and that he has to find the middle road for their marriage to work. Romeo and Juliet are not moderate people and need to take the advice they are given. They’re rushing everything and committing to get married so fast when they really don’t know each other very well and they aren’t thinking of the consequences and problems that could come up after everyone finds out their married. They should take a chill pill and slow it down and figure out their future together where they can be happy.