"He tastes like you, only sweeter."
Anna says this to Larry after she tells him she has been sleeping with Dan and Larry erupts into a fit of rage. He demands to know intimate details of their sexual relationship including how his semen tastes, and this is her response.
"Lying is the most fun a girl can have without taking her clothes off. But it's better if you do."
Alice says this to Larry while she is stripping for him and he is demanding her to tell him her real name. She keeps giving him her stage name of Jane and it infuriates him because she is pretending she doesn't know him. Thus this statement is her saying that she knows what she is doing to him.
"Have you ever seen a human heart? It looks like a fist, wrapped in blood!"
Larry says this when Dan starts to describe a human heart. Larry is a doctor who's actually seen the heart up close and personal and this statement is him telling Dan that he has been in the trenches of love and he's bloodied by all that Dan and his words have done to unravel his life. It's a statement that separates the two men into categories of violence and passivity in how they live their lives.
