<human>: When I first went to college, I came in with a good friend from high school. Over the next few years, I held a spot in her friend group. Her friend group was pretty close knit, although, I don't like to put my eggs in one basket and eventually was a player in a variety of different social circles.

My junior year of school, I started going through a terrible depression. I drank more, did more drugs, dropped out of classes, etc. My friend was one of my biggest supporters throughout this time. My depression lasted through the fall semester of my senior year, and broke that December. During my depression, I resolved to stop drinking and doing drugs for the sake of my mental health. This friend group on the other hand turned 21 and come their final semester, their life revolved around the bottle. Booze, weed, and more booze. My connection with the group suffered because I remained sober.

The spring semester of senior year, a girl, whom I was friends with since freshman year, slept with a guy I introduced to the group my junior year. They fornicated after a night of heavy drinking. This wouldn't normally be a problem except the girl was in a relationship. After accidentally letting the gossip slip (honest mistake on my part), the group turned on me. I refused to apologize, not because I wasn't sorry, but because I found the drama to be innocuous and juvenile for college seniors. (Big news students + booze = fucking, who knew?) Shortly after, I was outcasted from the group, and I didn't even know until the end of the semester because no one bothered to confront me. I eventually was confronted by the guy, telling me how he was worried about "my health and lifestyle". For most of that semester, I sat at home, studying and hanging with my gf, while this kid and the group spent 4-5 days of the week drinking heavily.

I still feel very angry about all of this. I want to go the extra step and want to start eliminating these people from my social media, but also feel torn, because I don't want to further burn bridges.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: I made a mistake, and my friend group scapegoated me because they were too afraid to talk about their problems, which they dealt with by more drinking and drug use.