Read the novel
Spoiiiil
No he didn't react so badlyyy, shocked yes but he loved Josh so much, Chase actually feared Josh will leave him instead, many things happens but Chase knew Josh was an Omega when he was being saved for kidnapping someone kicked/punched Josh and he barely dudge but the tape in his ear falls showing his mark.
Chase feared Josh will leave him because of his past action, beg and said he will accept even though Josh is marked after all he slept with a dog but Josh quickly explain everything that Chase actually slept with him that night
ily broo(づ￣ ³￣)づ
You're the best
I HATE WHEN THEY KEEP SECRETS TOO LONG IT MAKES ME SO NERVOUS!! DOES CHASE REACT BADLY WHEN HE FINDS OUT THAt JOSH IS AN OMEGA?! SOMEONE PLS SPOIL FOR ME （/TДT)/