Yes I do think Friar Lawrence is trying to tell them about their relationship. He wants to make sure they treat each other good. He tells them to love moderately and that’s a good idea because they shouldn’t be overly protective of each other or not be protective enough. They should be in the middle of those two. They probably wont take the advice because they’re basically still kids. Teenagers don’t want to do things when someone tells them to. In order for them to follow the advice they will have to treat each other the right way.