Why didn't the guys do a better job covering for their boy?
When Matt (Jennie's husband's) got caught in bed with McKenna, why didn't his "friends" alert him "your wife is coming" and stall for him, get him out of that situation. They let Jennie walk right in on him. They didn't give him a heads up at all. The correct Bro action would've been one guy runs to alert him, get him up and to the bathroom to shower, while the other two stall the ladies and tell Jennie her husband drank too much and got sick.
If they were not willing to do that, they shouldn't have let it happen in the first place. They all should've c-blocked the guy if they weren't going to cover for him later.