STRONGSVILLE, Ohio -- What began as a sexual relationship between a Strongsville teacher and a male student has turned into a bitter custody battle over the couple's child, filled with finger pointing and lawsuits, reported NewsChannel5's Joe Pagonakis.

Steven Bradigan, 20, and his family want sole custody of his 2-year-old son. The family is also filing a lawsuit against Strongsville City Schools for not taking action against a teacher-student affair that they say should have been stopped.

Bradigan says his relationship with 39-year-old Christine Scarlett began when he was 17 years old and a junior at Strongsville High School.

Scarlett allegedly held a win a date with a teacher contest, and took Bradigan to Dairy Queen.

Bradigan said Scarlett then made a move on him in the parking lot of a Strongsville mall.

Bradigan says a sexual relationship followed, but his family and his attorney say when the incident was reported, the school district did little to pursue an investigation.

But the Strongsville school district says it acted quickly. School officials said they fired Scarlett immediately, contacted Cuyahoga County Children Services, and asked the Bradigans if they wanted to file charges with the police department.

Bradigan's parents say that didn't happen, and will file a lawsuit and fight for the custody of the toddler.