Affleck made headlines on Wednesday, when he was criticized by a fan for speaking out against Harvey Weinstein -- whom he's worked with on multiple films, including his big break, 1997's Good Will Hunting -- amid the multiple sexual harassment claims against the studio mogul.
Referring to Affleck, the Twitter user wrote, "He also grabbed Hilarie Burton’s breast on TRL once. Everyone forgot though."
Burton then responded, "I didn't forget," before tweeting video of a promo for a TRL special, where she candidly talks about the alleged incident.
Affleck apologized, tweeting, "I acted inappropriately toward Ms. Burton and I sincerely apologize."
On Wednesday, a source close to Affleck told ET, "Ben has done things in the past in jest that could be seen as over the top or inappropriate, but he would never intentionally hurt or harass anyone."