I think Friar Lawrence was trying to tell them that it’s best not to go too extreme. If they blow things out of proportion, their whole marriage is going to end in a train wreck. It’s pretty good advice on the Friar’s part, but I think it’s falling on deaf ears. As we’ve already witnessed, Juliet really has no idea what’s going on, and Romeo is running around loving anything standing on two legs.
We’ve all heard the story, and we all know they’re going to take this stuff to extreme, and end up dead because of their extremity. I think that they could’ve taken this more slowly, but, then we wouldn’t have a story, would we? Anyway, not my problem. Oh well.