act 5

I think this is the quote:

In such a night Stood Dido with a willow in her hand Upon the wild sea banks, and waft her love To come again to Carthage.

Lorenzo and Jessica, still at Belmont, sit outside and enjoy the night. They compare the night to the stories of Troilus and Cressida, Pyramus and Thisbe, and Dido and Aeneus, and then extend the analogy to their own love affair. They are interrupted by Stefano, who tells them that Portia is returning home with Nerissa. Lancelot then arrives and informs Lorenzo that Bassanio will also be back by morning. Both Lorenzo and Jessica return to the house and listen to music.