Despite his personal and professional life crumbling, Johnny Manziel always seems to have fun. The good times, however, aren't enjoyed by his ex-girlfriend Colleen Crowley.

Manziel served as a groomsman for his old Texas A&M teammate Mike Evans at his wedding over the weekend and even gave a speech. Photos of the quarterback enjoying himself showed up all over the Internet, and left a "mad and upset" Crowley in tears, sources told The Daily Mail.

Mike Evans Dodgers Questions About Johnny Manziel Drinking At His Wedding

The model alleges that Manziel violently attacked her after a dispute on Jan. 30, and hit her so hard in the left ear that she's partially deaf.. Crowley also said Manziel threatened to "kill us both" during the attack.

"Colleen was in tears when she saw the photos at the wedding, she was very upset," the source told The Daily Mail. "She's mad that he is able to get on with life as normal as if none of this ever went down. It didn't help that the wedding was in Houston, Colleen's hometown where her family lives, it felt like he was rubbing her face in it. Colleen was pretty shaken up by the attack and she's angry that Johnny is still partying."

Johnny Manziel's Grandpa Says Colleen Crowley Has 'Problems'

The former Heisman Trophy winner has had repeated issues with alcohol, but there has been no proof that his partying at the wedding included drinking. Still, Crowley reportedly doesn't like seeing her former flame having fun and returning to a "normal life" after the alleged assault.

Manziel is currently under investigation by the Dallas Police Department for the incident, which is the second time Crowley has claimed he physically abused her.

The quarterback and the model spent two years together before breaking up.

For more content, follow us on Twitter @SportsWN or LIKE US on Facebook