A man who suffocated his 14-year-old Brooklyn girlfriend because he thought she was pregnant — then burned her corpse and stuffed it in a suitcase — asked if he could do only community service for the crime, court papers reveal.

After confessing to killing Shaniesha Forbes in January 2013, Christian Ferdinand, 22, asked cops, “Do you think I can get some kind of community service?” according to documents obtained by The Post.

A Brooklyn jury took just an hour Monday to find Ferdinand guilty of second-degree murder for the heinous crime — ensuring that he now faces up to 25 years to life behind bars.

The evil killer dropped his head on the courtroom table when the verdict was read aloud.

“I don’t think God should forgive him. He doesn’t deserve forgiveness. I hope he rots in jail,” the victim’s older sister, Shaquana Forbes, 22, said outside court.

In the five-page report on Ferdinand’s confession, the killer was asked whether Forbes resisted his attempts to hurt her, and he chillingly replied, “She tried, wasn’t much of a struggle, she was little.”

He doused her corpse with Axe body spray and then used a Bic lighter to char her body before stuffing it in a suitcase and tossing it into Gerritsen Bay, court papers state.

“The defendant hoped that the saltwater would destroy any evidence the flames didn’t,’’ prosecutor Robert Walsh said in closing arguments.

The next day, Ferdinand shacked up in a hotel room with an ex-girlfriend who wanted to have sex — but he told her he was too tired, court papers state.

Ferdinand said Forbes had told him she was pregnant in a text and warned him that she wouldn’t get an abortion because her mom is religious, the documents say.

“My n—a, are you serious? Kill that s–t,” Ferdinand texted back, the papers state.

When Ferdinand and Forbes later lay down on a couch at his cousin’s home, he became enraged when the teen wouldn’t stop talking about her pregnancy and held a leather pillow over her face until she stopped struggling, the papers say.

Investigators found that she was not pregnant when she died.