I bought the game a week before they announced the dlc

Funny story: Usually my friend and I split the cost of video games with each other cause we share our games. Hat in Time is 30 bucks on Steam and I asked my friend for 15 bucks. Friend told me that he/she never heard of the game and would never play it. I bought it with my own money and told them if they chance their mind they owe me 15 dollars. A week later the gaming company for Hat in Time announced that there would be free dlc and a co-op mode in September. I showed my friend this and told them I would take my 15 dollars now.