Wiz Khalifa and Amber Rose's short-lived marriage seems to be heading for a messy ending as the pair reportedly can't agree on the custody terms for their 19 month-old son Sebastian 'The Bash' Taylor Thomaz in the divorce papers.

Ambr Rose
Khalifa and Rose are conflicting over the custody terms of their 19 month-old son

In a Los Angeles court on Friday (Sept 27th), the 27 year-old rapper filed what are believed to be almost identical legal documents to Rose in his response to the divorce. But Khalifa is challenging his estranged wife's request for full custody of Sebastian.

According to E!News, who obtained the papers, Khalifa also cited irreconcilable differences as the reason for their separation, but he is asking the court to grant him joint custody of their young son and visitation rights.

The pair also have a prenup in place, which will provide spousal support for Rose.

More: Rapper Wiz Khalifa Cancels California Concert Following Fatal Backstage Shooting

The main reason for the failure of their marriage has yet to be confirmed, but as soon as this news broke last week, many people instantly put the blame on the curvy model. In response, Rose took to Twitter to defend herself against these false accusations.

"Please stop with the fake stories," she wrote. "I would never ever ever cheat on my husband in a million years I think u guys know this.Unfortunately now my ex-husband can't say the same...I'm devastated and crushed but my main focus is Sebastian. Thank u all for the support in this difficult time."

More: Does Wiz Khalifa And Amber Rose's Baby Have The Best Celeb Name Of The Year?

An insider close to the celebrity couple hinted to E!News that they "have had marital issues for some time now."

"They cared very much for each other but it all happened so fast between having the baby and getting married. They really did not know each other as much as they should have before getting married," the source continued. "They both have not had the best pasts with relationships and when they met each other it was more lust at first sight than love at first sight."