Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: Written on mobile so sorry for any formatting errors. 

Okay so here at University me and my mate are in the habit of going to the gym every morning at 6:30am before our 9:00am lectures. Last night he decided to go on a night out but still wanted to make sure he went to the gym this morning. So in the evening before he went  he came and gave me £20 and stated that if he did not meet me in the morning to go to the gym I can keep the money- being a broke student I happily agreed.

Fast forward to this morning and he never met me and I could see his light was off through his window. I messaged him and got no reply so continued to go to the gym alone. Once i got back to our accommodation he was up and explained that he set his alarm but somehow slept through it and never consciously chose not to go to the gym.

I felt bad after hearing this but said I would stick to the deal and keep the money so he makes sure he comes next time. After this I decided to buy him a drink and he thanked me. However some of my other friends are saying that me keeping the money is not me being a good friend by sticking to the deal and that I should pay him back all of it (£20 may not sound like a lot but as I said, for me as a student it is nearly a weeks worth of money).

AITA for not giving him the money back? 

not giving my friend the money back