Jason Kelce apologized on air for repeating an anti-gay slur directed at his brother Travis Kelce by a heckler whose phone he smashed in an incident that went viral on social media over the weekend.

“Everyone saw what happened,” Kelce began at the top of ESPN Monday Night Countdown broadcast. “I’m not happy with anything that happened. I’m not proud of it. In a heated moment, I chose to greet hate with hate, and I just don’t think that’s a productive thing, I really don’t. I don’t think it leads to a speech and that it’s (not) the right way to go.”

In a clip series which gained traction on Saturday, a man could be heard taunting Jason Kelce as he used an anti-gay slur against his brother in reference to his relationship with the singer Taylor Swift. In response, the retired Philadelphia Eagles player turned around and smashed the individual’s phone to the ground, repeating the same insult. The incident took place during the Ohio State-Penn State game at Beaver Stadium in State College, Penn.

“At that point, I fell to a level I shouldn’t have,” he continued. “So I think at the end of the day I try to live my life by the golden rule, that’s what I was always taught. I try to treat people with decency and respect, and I will continue to do so even if I failed this week.

Kansas City Chiefs tight end Travis Kelce has been dating pop star Swift since September of last year. The musician and athlete have been seen together alongside family members at various football games. Swift arrived at tonight’s Tampa Bay Buccaneers-Kansas City Chiefs game held at Arrowhead Stadium in Missouri to support Travis Kelce. (His team won 30-24 after overtime.)

“We have to focus on one game, obviously one game. I don’t think this is the ideal time to go into more detail,” Jason Kelce said in his closing remarks.