Guys, When a guy invites you in his personal space?

One of my male friends has been inviting me into his personal space, yet doesn't make a move. Like he will try to show me something, but rather than hand whatever it is to me, he will hold it and expect me to get super close to see it. However he never makes a move. I occasionally try to give him a small back rub, or hand on his knee or something. But he never makes a move back?
Guys, When a guy invites you in his personal space?
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