<human>: This co-worker did something amazing for us, he organized an after-work event. We went bowling and he booked 7 lanes for us because that many people had said yes to the event. On that evening alot of people didn't show up and two of these lanes stood empty, but we still had to pay for them. The co-worker thar organized the event paid for it. I found it out today. I paid for myself on the lane that I was using. I'm going to offer to pay a part for the lanes that didn't got used tomorrow.

But the question is, should I try to make more people chip in or do you think there is a chance that I will upset my co-worker if I try to sort this out? 

What you need to know about me is that I have a very unhealthy relationship with money. I have OCD (obsessive compulsive disorder) about it. I have two rules, "Money most increase monthly" and "You are a worthless piece of shit that deserves to die if you owe people money" the only exeption is that you can owe money to a bank, under no circumstances are you allowed to use another persons money and not sort it out. 

I phrased it like my ocd tells me in my head so you get the picture, now I have alot of worthless co-workers that deserves to die. And I just want to squeeze them dry for leaving our co-worker with the tab. So that is why I come to you reddit first to see what you think before I spring in to action.

Can you condense the text into a few key points?
<bot>: My co-worker had to pick up the tab for alot of us during the last after-work and I want to fix this so he gets reinbursted. But I don't want to offend anybody. Help!