[He turns a bit so he can face Eridan better and smirks down at him, knowing all to well what he's talking about.]

She is the worst bitch ever, believe me. [Why else would she sleep with Strider if not to spite him.] You can be as angry as you want at Miss Matteris, but remember Vriska is a product a circumstance. She's had a hard life, she doesn't know...any..better. [Is he suddenly reconsidering everything he said about Gamzee? No. Not at all.]