messed up at work could i be in trouble?

so i work at a clothing store and i receive a discount when i purchase something. well i forgot my credit card at home and wanted to get a necklace and a pair of earrings for my boyfriend to give to his sister. so i call my boyfriend and tell him to come to the store and buy it himself with my discount. well.... you're not allowed to do that, however a manager has to do the transaction and he said it was fine. is there a chance i could get in trouble? or is it fine since the manager did it anyways? it completely slipped my mind that the discount only applys to you and YOU have to buy it. pretty much you cant buy something for someone and be reimbursed which is pretty much what happened minus the secretiveness.