Got caught with a fap account

So I had been dating this girl for almost 1 and a half years now, we’ve been best friends before that for around 7 years. So jumping to the point in the initial days of our dating she had found out that I had a fap account and she confronted me regarding that and after a long conversation we had decided that I would be deleting that account and never use it again because it made her very uncomfortable, she thought it was worse than watching porn while in a relationship. But I had relapsed and used that account again a few times even after we decided on the boundaries that I wouldn’t be using it again and she found out about it a couple of days ago. I know I messed up. What do you think I should do now? Ik there’s no scope for redemption but what’s the next best thing I can do right now. I am truly ashamed and I deeply regret my actions.