I just found out (25f) my fiancé (27m) of I’ve been with for 5 years was a monster in high school

I’m gonna type this fast excuse the grammar he’s back for lunch and I don’t know him to know anything yet

Ok guys so I (25f) met my fiancé (27m) 5 years ago I thought he was Perfect he’s handsome,kind,funny and has a stable job (cop)

He’s treated me so well since we met he stopped me down for speeding and ended up with my number everything was going so looking back now I should have seen the red flags like his family and old friends joking about his temper and his high school bad boy days and now I’m questioning did my cat really run away or did he make him

I’m babbling so here what happened we had an engagement party in his home town a few days ago and I got a Facebook message now long after warning me about my fiancé saying he was this monster in high school so I thought lol this is someone trolling but than as the day went on 5 more people messaged me one being his cousin

I asked his cousin for proof because in my native dumb head I thought this was a joke because my fiancé is an amazing person he is a cop for god sake and his cousin told me give him a few hours

Well about two hours ago my world turned upside down I was added to a group chat with multiple with a lot of proof I’ve seen videos, heard stories and seen screen shots even a memorial page of one of his victims(suicide at 16)

Guys this was horror movie level shit from threats, assault both physically/sexual lots of misogyny and homophobia even one of him harming persons dog while the kid screamed as my fiancé laughed he looked about 18 in the video

The stories I heard both broke my heart and scared me and I don’t know what to do maybe he has changed? Should I confront him? should I give him a chance to tell his side?

Ok so i’ll give more information now I’m alone

I spoke to his cousin and i asked why didn’t they ever do anything since they have videos he said “you haven’t thought we tried years ago? Life isn’t a fairy tail the bad guy doesn’t always face justice, your future in laws and fiancé made sure everything always went away” and i than asked Why now tell me he was honest they (him and other victims) wanted to warn me out of both concern but mostly revenge because how dare he have a happy life after what he did to them which fair

I asked did he know if my fiancé ever do anything like anger management or therapy after high school he said he did and I asked does he think my fiancé changed he said while he isn’t like his high school self anymore people like him never truly change.

I asked him if I decided to leave would he help me he said he would but we would need to make a plan that can’t lead back to him for his safety

Ok I’ll answer some things that y’all keep being up

I can’t 100% say he unalived my cat because my cat liked to escape and wonder the neighbour hood, people keep asking me why I didn’t see any red flags in 5 years I didn’t notice them at the time

As for how we got together people keep pointing out that was a red flag well look I’m gonna be real here at the time I thought I was hard stuff because I talked my way out of a ticket and he is really handsome so I thought in my naive head it would be a cute story to tell our grandkids one day I’m from a country were people don’t fear cops like they do in America