Guys, how friendly can you be towards a girl you’re not attracted to?

I have a guy friend who happens to reply to my stories frequently. Not just with those quick emoji reactions, I mean he actually writes his reactions to the stories. I know he’s not romantically interested in me and that he’s a nice person in general, but normally my other guy friends don’t respond as frequently as he does. Last time I saw him which was for his bday in November there was a point where we touched hands and he asked why my hands were so cold and he started to warm them up with his hands. Again I know he’s not romantically interested in me since I asked him about it after the party and he said no. He sometimes makes jokes with me/teases me when he chats with me. He’s even comfortable sharing content that he thinks is considered sexual. He might just be comfortable with me as a friend but it’s a new thing for me, so that’s why I’m asking.
Guys, how friendly can you be towards a girl you’re not attracted to?
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