Found by the Lunar Pack — Rosa Swann

Jasper lives by four rules: No kissing, no cuddling, no feelings... and never getting hurt again.

Every full moon, Jasper runs away from the packs. He's a stray, a loner, a werewolf without a pack. Caught by an Alpha while trespassing on his territory, Jasper is suddenly saved by a wolf he doesn't know, for reasons he cannot understand.

When he wakes up the next morning beside a man named Felix, Jasper's confusion has only just begun, and it deepens when they bump into Milo at the local coffee place.

Three men, one night at a club, it was supposed to be some innocent fun. But it soon turns out that his rules, and maybe even his heart, are on the line.

A 11,000 word long story about a man who is caught off guard by life when he least expects it.
This is book 4 in the Lunar Pack series, and starts Jasper's story arch.