Does my online friend like me?

He starting throwing me attention a month ago and didn't really know him that well because he is shy. After I start responding to his chats he started to tease me a lot calling me "grandma" and teasing me in the mutual games we play.

He started joining my friends livestreams of games to hang out while I was there and he hangs out when I stream an anime show with everyone.

I recently invited him to play a game with me, he accepted and stay up until 5am to play it with me (due to timezone). Then he invited me to play one of his favourite games, he taught me how to play and played for 3 hours and he stayed up until 5am again.

He teases me a lot and we chat on voice call occassionally, whenever we play a game. We do not DM each other though but talk in our mutual group chat.
Does my online friend like me?
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