Brittny Gastineau Dating Retna After Hotel Fight -- Lesson NOT Learned

Brittny Gastineau is a glutton for punishment ... strolling with the guy she claims beat her to a pulp just weeks ago.

Brittny and her BF, famed street artist Retna cruised the Century City mall in L.A. Monday ... without the bruises and black eyes that landscaped her face last month after a knock-down, drag-out fight.

Retna's lawyer admits his client did the damage but says Brittny was out of control and it was mutual combat. The lawyer claims Retna was also beat up but no photos ever surfaced showing his injuries.