He doesn’t know if other male omegas get this wet, since he’s never slept with a male omega, or with a man in general, except for chase, so therefore chase is his first when it comes to sleeping with men
Chase just be jealous. I think he is saying it from that kind of mindset. Like Joshua has slept with other men. But in fact Joshua has only dated women in the past or had one night stands. So it's cute that Chase was his 1st male lover and the father of his son.
Huh, why did the conversation even go that way? Who would even assume that he slept w an omega male before? And he can just check himself…