Bigby absent-mindedly laps his tongue along your shin as you lay against him, his rough tongue making your skin start to go numb.
You always knew he tended to get more animalistic in his true form, but you certainly hadn't expected him to start grooming you. Apparently, it was a method of showing affection in wolves. And, also apparently, that also stretched to fairytale, mystical, 300-400 pound, 8-foot-tall werewolves as well.
A deep growl rumbles from Bigby's throat when you lower your hand into his ashy black fur. His big, wolfish yellow eyes look down at you, uncharacteristically soft.
His ear twitches whilst his tail brushes up against your side.
This was Bigby at his most vulnerable. He let you see the true him... and he let you touch, kiss, and caress him while doing it. Just the way he looks at you shows just how deeply he trusts you in this moment.