She tells Lady Capulet that she has to go to confessions.
Romeo went to Mantua, which is a city a number of miles away from Verona.
The excuse Juliet uses is that she is going to Friar Laurence's cell for shrift or confession.
Twice in the play Juliet is allowed to visit Friar Lawrence's cell on the pretext of going to confession. One of those times is to marry Romeo. It would appear that this is the only excuse she can use to get out of the house.
to get his help in devising a plan to get out of marrying Paris .
First he's going to Juliet's bedroom, to spend the night with her, then he's going to go to Mantua, to wait for Friar Laurence to arrange for his return.
To confess her sins and be absolved.
Juliet goes to friar Laurence's cell for help, so she doesn't have to marry county Paris. The friar is able to give her a solution and that solution is a potion in which can give Juliet a death like sleep in which she will wake up in forty-two hours.
She isn't really going to confess anything but she tells her parents she is going to confess her disobeying them.
She is confused and desperate because she does not know what to do and was going to kill herself if Friar Lawrence did not come up with a plan to help her.
She says she is going to confession, but she is really going for help. The friar helped her to marry Romeo, and now she is asking him for help to prevent her from marrying Paris.
She says she is going to confession.
Friar John, who was sent as a messenger to Romeo from Friar Lawrence, was unable to deliver the letter. Because their was some kind of disease issue going on in Mantua that Friar John can't stand it. so, Romeo ended up with no letter receiving and was unable to know that Juliet was faking the death.