Most of us would be pretty rattled if we discovered our spouse was cheating. But few of us would go as far as this betrayed husband.

On Wednesday, a Reddit user posted a letter one scorned husband wrote to the “other man’s” neighbors, listing the man’s name, date of birth and license plate number. Not wanting to “physically harm” the other man and “risk losing [his] kids or going to jail,” the husband said he planned on “spreading the word about [the] lowlife loser” at the man’s place of work and his church. Yikes.

Read the full letter below:

The note took us by surprise, but it’s not the first time we’ve heard of an ex getting a little unhinged over an affair or divorce. Click through the slideshow below for five more stories of exes who acted out post-split.

Read more: Huffington Post