Elizabeth soon gets over her shyness and becomes playful and flirty again.
She asks Mr. Darcy how he came to fall in love with her. It's the sort of lovey-dovey talk that never gets old between two new lovers but is extremely tiresome to everyone else, so we won't recap it—but definitely check it out for yourself.
One thing Lizzy says is that she's pretty sure what Darcy liked about her was that she didn't fawn all over him, like other women.
We also find out in this chapter that Mr. Bennet really enjoys letting Mr. Collins know that Elizabeth and Mr. Darcy are, in fact, engaged.
He advises Mr. Collins to remain in good standing with Mr. Darcy, who has, ahem, a lot more money than Lady Catherine.