history: I feel really bad that my coworker took the blame for something I messed up on. I should have spoken up when our boss was scolding them about it. I had made a bad mistake on a work project_comma_ and my coworker took the blame for it. I felt bad for not speaking up to my boss. That really sucks. Did you make it up to your co-worker?
current: I apologized to them later about it. It was tough hearing our boss scolding them about it though.
next: That's good to hear that you and your co-worker mad amends. Live and learn!