MC Kevin married his wife, lawyer Deolane Bezerra, three weeks ago

But wedding vows are tough, especially when you are a popular recording artist like Kevin.

On Sunday, Kevin and his friend Victor Fontenelle met Bianca Domingues, a 26-year-old model and escort, during an afternoon of drinking and smoking.  One thing led to another, and the three went up to Kevin's hotel room to have sex.

During the threesome, Kevin got word via text that his new wife was looking for him.  So when he heard a knock on the door he assumed it was her.  He went out to the balcony and tried to climb down onto the balcony below.  But he lost his footing and fell five stories, landing hard right next to the pool.  

He died in the ambulance ride to the hospital.

It actually wasn't his wife at the hotel room door, rather another friend looking to get in on the action.

After learning of Kevin's death, his widow found Dominques --who was paid about 400 bucks to have sex with Kevin and Fontenelle -- in the hotel lobby and the two women fought, only stopping when the police separated them.

Kevin's funeral was yesterday.  

Deolane paid tribute to her late, hooker-loving husband on Instagram

RIP.