The way his skin crinkles around his eyes when he smiles at me.
The daft squeaking noise he makes as I start massaging his feet (he reciprocates, but I don't make silly noises).
The way he talks to TwatCat when he thinks nobody is listening (he always claimed he didn't do such things, but I overheard him having a full conversation about remembering to keep out from under his feet when he's cooking and, if he stayed up on the side, he'd be able to watch the blackbird in the garden again and he'd get a couple of treats when DP was done. The daftest bit was that TwatCat was making various noises back and immediately leapt up onto the side, so it was obvious that these conversations are a regular occurrence on both sides).
That it doesn't matter how tired, grumpy, overwhelmed or feeling like shit I might be, he'll try to establish whether I need food, sleep, a hug, all the lights and TV switched off or to be left alone and then make it happen.
That, despite being very gentle, quite anxious and unsure about many things, whether I hurt, need calming, reassurance, help with washing my hair or simply moving out of the way, his touch is confident and exactly what I need at the time.
He's funny, smart, sweet and kind.
This is seriously outing.