For,By your leaves, you shall not stay alone Till holy church incorporate two in one.
Act 2, scene 2, 54-55
Call me but love, and I'll be new baptized. Henceforce I will never be Romeo
act 2 scene 3 24, 53-54
I have been festing with mine enemy, where on a sudden one hath wounded me.
Poison hath residence and medicine power
Here, they are now married by the Friar. Romeo and Juliet both rebelled against their families to marry one another as they are of separate rival families.
In the famous balcony scene, they are first of all rebelling to even see each other. But when Romeo says he will never be Romeo, but only be known as love, it shows how he rebels his own name and family to be with Juliet. He will be "reborn" for her.
Here Romeo has just told Friar that he is in love again, and he later says to be married right after friar said to not rush love as it would be dangerous. He is rebelling to be with Juliet, (which is the feasting with my enemies part), but also rebelling against friar's ideas which would be the fate of the lovers.