Wiz Khalifa accuses Amber Rose of sabotaging son's birthday party

Rapper Wiz Khalifa has accused his estranged wife Amber Rose of deliberately sabotaging his birthday plans for their son on Saturday (21Feb15) by failing to show up with the boy.

The Black and Yellow hitmaker took to Twitter.com to voice his displeasure with the situation, which prevented their baby Sebastian, aka Bash, enjoying the pirate-themed party the hip-hop star had organized for his kid's second birthday.

Early on Saturday, an excited Khalifa tweeted, "we bout to party super hard for my young prince. #BashDay (sic)", but he returned to the site hours later to share a number of sad images of the cake and presents that had been left untouched after his boy's no-show.

One caption simply stated, "Only thing missing was bash."

Khalifa then took aim at Rose, without mentioning her by name, by lamenting, "ive (sic) never voiced my true unhappiness out of fear of the person I was with and what she would do to make me more unhappy of (if) anyone knew."

He continued to champion fathers' rights, and admitted he just needs "some help" as he fights over custody of his boy, tweeting, "standing up for all fathers who need, deserve, or can't find help. as a man, and a dad you'll feel like, 'I got this.' but who got us?"

He added, "very greatful (sic) for my amazing support system right now. especially my mom and dad. this is tough for them too. they raised me normal (sic) and want the same for my son without the evil that fame brings."

The rapper went on to clear up rumors suggesting his infidelity led to his split from Rose last year (14), insisting her claims are not true.

He wrote, "anyone who really knows me knows that I never cheated on amber... i feel like its (sic) my responsibility to make sure you have the truth and aren't misguided so we can all move like bosses."

The model has yet to respond to the allegations. The dispute between the estranged couple isn't the only feud Rose has become involved in - she has also been trading barbs online with her ex-boyfriend Kanye West and his sister-in-law Khloe Kardashian after publicly calling out rapper Tyga, 25, for leaving her good friend Blac Chyna and reportedly romancing the Kardashians' 17-year-old half-sister, Kylie Jenner.