Could you help me understand this line?
Richie: Dom, you...How do you know him?
Patrick: Well, we actually hooked up once. But it was eons ago,and it's never again.
Richie: Conveniently left that out.
Patrick: (Laughs) No. Not on purpose and completely friends now.
What does it mean "Conveniently left that out" in this context?
Richie thinks Patrick doesn't mention the hooked up thing on purpose?
Thanks in advance your help :)