According to Fairfield Citizen, Mahoney is accused of responding to being dumped by striking him in the stomach and face, breaking his nose.
He studies at Fairfield University and both he and Mahoney are freshman and on the swim team, according to The Daily Mail.
Kebbell is originally from the Isle of Man in the United Kingdom.
Her Instagram page has more than 100,000 followers.
Kebbell posted another picture a short time later after cleaning his face off and appeared to be in good spirits, smiling at the camera, reports the Daily Mail.
The attorney for Kathryn Mahoney told DailyMail.