Tentacles and Mistletoe by Toby Wise

Baylen is a particular man who finds himself in need of a temporary personal assistant. In comes Milo.

After an address mixup, Baylen ends up at a bar with Milo. The two share a drink, share a night together, and then have to decide what to do from here. As much as they fit together, Baylen worries that being Milo’s boss complicates their relationship too much. To make matters more confusing, Milo is (eight appendages) more than he seems.
Everything changes when they find themselves under a mistletoe right before Christmas.