So my friend had a bachelorette party. We rented out a cute Airbnb house with a hot tub by the lake. Everything was paid and organised by us (the party) as it was a surprise for the Bride. We shared the airbnb costs evenly event though I am pregnant so I didn't use the tub ( we paid 500 extra just to use the hot tub). We also each made one meal for the party and bought all things needed for the party and the barbeque including alcohol. It was all on one receipt so it was easier to divide earlier ( between the party of course, the bride didn't paid a dime since it was her party). Since I am pregnant I and I wasn't drinking I bought my own alcohol free wine. After the party when we were splitting the bill for the groceries, decorations etc etc I said I'm going to pay my share excluding alcohol since I haven't drank and my friends said that we should split evenly and I was the asshole for refusing to do so. I told that o paid extra for the house and the tub and it was already 80 bucks for something I didn't use and I will not pay for their alcohol (it wasn't much but it was still like 50 bucks). I didnt care about the money but why should I pay for something I said in the begging that I won't drink. So am I the asshole?