Hayden Kho and Vicki Belo. File photo

MANILA, Philippines -- Celebrity doctor Vicki Belo is spending Valentine's Day alone.

Belo flew to Los Angeles early on Monday after yet another controversial split from fiance Hayden Kho.

"On my way to Los Angeles for my first Valentine alone. Maybe I'll learn to love myself," Belo said in her official Twitter account.

Belo's friend, talk show host Butch Francisco, confirmed on "The Buzz" on Sunday that the couple have split but declined to give a reason.

Last Friday, Belo posted on Twitter that Kho can now openly date actress-singer Nancy Castiglione or Nancy Jane.

"nancycastilogne you can now openly date @haydenjr . You have my blessings . Hope you'll both be happy," Belo said.

Rumors have circulated that Kho was allegedly spotted kissing Castiglione at a bar in Taguig.

For his part, Kho admitted that he and Belo are having a misunderstanding.

"Before things go out of hand: Vicki and I are just having a misunderstanding. Don't make conclusions. There's infidelity issue here," Kho said in his Twitter on Friday.

"I meant NO infidelity issue," he quickly cleared.

Kho, who is infamous for his sex videos, appealed to the public not to cast their judgement right away for the sake of Castiglione's children.

Castilogne, who is not married, gave birth to twins Matteo and Joaquin in March 2009.

Last Saturday, Castigliogne said in phone interview in a showbiz talk show: "Actually, to be honest, I am not really sure what's going on."

On Monday, Kho posted a cryptic message on Twitter: "Lost the war even before I found out there was going to be a battle. I don't even know what hit us. Somebody just took me to school!" -- ANC