smile that's to die for - What's the meaning?
SCRIPT
Susan: "What if I want to talk about the big crush I have on the plumber that lives across the street?"
Mike: "Big crush, huh?"
Susan: "Oh, yeah."
Mike: "Well, you’d have to tell me more."
Susan: "Well, um, he’s got a smile that’s to die for, and don’t get me started on his tattoo."

She kisses his hand.

Susan: "Thanks."

QUESTION
Susan: "Well, um, he’s got a smile that’s to die for, and don’t get me started on his tattoo."
1. smile that is to die for = Gorgeously attractive smile?

2. don't get me started on his tatto
- Does she say that she at first fell in love with him mainly due to "his tattoo"?

Thanks a milion!

Question

smile that's to die for -> What's the meaning? 
SCRIPT
Susan: "What if I want to talk about the big crush I have on the plumber that lives across the street?" 
Mike: "Big crush, huh?" 
Susan: "Oh, yeah." 
Mike: "Well, you’d have to tell me more." 
Susan: "Well, um, he’s got a smile that’s to die for, and don’t get me started on his tattoo."

She kisses his hand.

Susan: "Thanks."

QUESTION
Susan: "Well, um, he’s got a smile that’s to die for, and don’t get me started on his tattoo."
1. smile that is to die for = Gorgeously attractive smile?

2. don't get me started on his tatto 
-> Does she say that she at first fell in love with him mainly due to "his tattoo"?

Thanks a milion!

Answer

She likes the tattoo.  If she talks about it, she may not stop talking.  She will talk to long about it.

She loves the smile.  She feels crazy when she sees it.  She would die for it (to have the person that has the smile).