Why didn't he shower?

When I stayed over at his, I asked him what time he wanted me to leave his place. Following this I asked if I could use his shower.
I did, I didn't take long and to save on time washed my face and brushed my teeth in there.
He stayed over mine for the first time. And slept in until 11am, I did wake him 2x as we were supposed to walk the dog together.
Even when he got up, I offered him a glass of water and a cup of tea, but he didn't budge after I mentioned wanting him to get dressed so we could take the dog out.
I made an effort to lay out a towel and flannel for him to use the night before, even had a toothbrush ready.
But all he did was brush his teeth, and get ready to leave.

When ready i asked him if he remembered his way back, the reason being when I was at his he put me on the bus to get to the station only after I had asked him to.
He said "that's what Google map's is for"
But I walked him and the dog to the station.
But the walk was filled with silences.

I'm not entirely sure what was going on with him.
Why didn't he shower?
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