Is this story true?

Many years ago a "friend"of friends, who was kind of an asshole (push you off the t-bar in a tough spot; drink your Sunday beers) and whom I had to see way to much,: and although he was a peripheral part of the group, was swomeone I could never truly warm up to, moved away I enjoyed his going away party, because he was going away, and he moved. He moved to a state where one of my brothers lives and they remained friends; yet when Wife and I were visiting one year, he called, and my brother lied to him and said we had plans. When I asked why, my brother indicated he had "gone off the deep end and something is really wrong". I said so he's still the same guy? We laughed. Three weeks later his Mother died and he came up for the funeral in November.

Over Thanksgivng that year while he was here; I avoided him; but one night his live-in girlfriend called him at a friend's house (yup, cellphones weren't in use back in ther day) and told him to listen as she fucked another guy in their bed.

Christmas morning and I am getting high and watching the news crawl on the tv when I see: workplace shooting at small airline (he was a pilot, the type who feigns a coronary, has the plane dive 2,000 feet and thinks its funny) and the name of the place and I freak, call my brother and yup. He went to the office Christmas party with a gun (357 magnum); essentially kidnapped his girlfriend; shot a co-worker seriously wounding them; killed another co-worker who tried to save the girlfriend; killed another coworker who tried to save the girlfriend; raped another woman at the party; shot and killed his girlfriend; then called her Mother to let her know he had given her "something real to hate him for" and then, as per usual, when he went to shoot himself, realized he had fucked up and had to hang himself. Ruined Christmas and later when I refused to go to a memorial service for the fucking scumbag, two freiends stopped talking to me and still don't...

Is this story true or did I make it up?