Guy friend won’t hang out unless hanging alone?

I have a good guy friend who has been friends with me for 4/5 years. He just moved to my city and he suddenly started to hit on me asking me ‘do you want hold hands, etc’. He hasn’t confessed feelings or anything but he is trying to be physically close to me. I cherish him very much as friend but I m not romantically interested. He also have another good friend here we have a group. Every time he ask me to hang out alone (date or not I don't know) I ask in group if guys wanna hang out together.

he is a little pissed and won’t reply in the group any more. What can I do? Should I talk to him or wait till he says something?
Guy friend won’t hang out unless hanging alone?
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