Ever the lovesick exaggerator, Romeo weaves melodramatic metaphor after metaphor to lament his unrequited love for Rosaline. Romeo's friends, particularly Mercutio, seem to loosely tolerate his over-the-top self-pitying for being unable to have the woman he loves most. He even makes the absurd claim that Rosaline is the most attractive woman in the world with a metaphor about burning out his own eyes when Benvolio tells him that there will be so many beautiful women at the party that Rosaline will look shoddy by comparison:
When the devout religion of mine eye
Maintains such falsehood, then turn tears to fire.
In regard to the scene with Friar Lawrence, Romeo uses the phrase "ghostly father" as a double entendre when Lawrence still believes that Romeo is enraptured with Rosaline. On the one hand, he is simply referring to Lawrence as the spiritual leader that his is. On the other, he is comparing him to a "ghost" in regard to being old, lost in the past, and out-of-touch with current events.