According to an affidavit obtained Thursday, a man who used to coach swimming in Austin has been accused of sexually abusing a teen.

According to the affidavit, the woman, who is now 26-years-old, filed a police report against the man after filing a report with USA Swimming. She alleges that 49-year-old Francis Timothy O'Brien -- who also goes by Tim O'Brien -- started teaching her swimming when she was 13-years-old.

The alleged victim said that when she was 15-years-old, she and O'Brien would go for runs near his apartment in Bull Creek. During one run, she said he partially pulled down his shorts and showed her his penis.

When she turned 16 and got her driver's license, she said she started going over to his house where they would sleep next to each other. He allegedly would touch her breasts and vagina. She said he would also make her touch his penis.

Later, when she was 21, the alleged victim told police she moved in with him. She then moved out when she was 23.

She told police that she didn't file a police report until she was 26 because she figured he would be protected since he was the head coach of a national team. A friend eventually told her to talk to someone.

That's when she reached out to USA Swimming and filed a report. An investigator there spoke with O'Brien, who "did not refute the allegations made against him," according to the affidavit. He was indefinitely suspended as a member from USA Swimming, according to the investigator.

When police spoke with O'Brien, he said he stopped teaching in March of 2016 because "he had a former relationship with one of his swimmers from his team." He admitted that she started going over to his previous apartment, but he denied having a physical relationship with her until she was 17 or 18. He said he believes the alleged victim was "lashing out against him because the way their relationship ended."

According to online records with the Travis County Jail, he is not in custody as of Thursday afternoon.