A young man who made a 12-year-old pregnant after having sex with her was placed on probation on Tuesday.

The 21-year-old accused was 18 when he first had sex with the girl, then 11, after meeting her through an online dance game called Audition Sea in 2010.

He had pleaded guilty to two of five counts of having underage sex between 2010 and 2011.

A Community Court heard that after they became acquainted online, she agreed to be his girlfriend. During one of their chat sessions, she told him she wanted to try sex with him.

Sometime between June and July 2010, they met at Causeway Point shopping centre and were supposed to watch a movie. But he took her to his Ang Mo Kio flat and had sex with her.

On March 4, 2011, the victim ran away from home after a quarrel with her family as her parents had opposed her relationship with the accused.

She met the accused the same day. At his home, he asked if he could have sex with her and she agreed. After performing oral sex on him, the pair had sex.

The next day, the victim's family went to his home to look for the girl. Her brother called the police when the accused refused to open the door.

Two months later, the victim was brought to KK Women's and Children's Hospital and found out she was pregnant.

When the victim told the accused, then 19, he told her not to look for him again and that he had a new girlfriend. The victim underwent an abortion about two weeks later.

The accused, who has a hole in the heart since birth, was placed on 15 months' supervised probation and ordered to remain indoors between 10pm and 6am. His parents signed a $5,000 bond for his good behaviour.