than fucking someone you don't know
to keep yourself warm
this snippet from act 1, scene 2 of glengarry glen ross (mamet) puts dialogue to stephen's sentiment.
Moss: I lied. Alright? My end is my business. Your end's twenty-five. In or out. You tell me, you're out you take the consequences.
Aaronrow: And why is that?
Moss: Because you listened.