Halstead and Lindsay in “Unfinished Business”

Halstead

How long have we worked together, a month? I think it's time we could be honest with each other. Wouldn't you agree?

Lindsay

No.

Halstead

Two things: One, you driving all the time, I'm not down with that.

Lindsay

Seniority rules.

Halstead

I've been on the job longer.

Lindsay

I've been in this unit longer.

Halstead

Okay, look, I feel like a househusband.

Lindsay

Aw. What's the second thing?

Halstead

What's the deal with you and Voight?

Lindsay

This stays between us.

Halstead

Of course.

Lindsay

We went to prom together.

Halstead

I mean, is he your secret dad or something? Put it this way if I were to ask you out, would I have to get his permission first?

Lindsay

[scoffs] Any guy who needs to ask my dad's permission to date me should save himself the trouble.