Hi TS,
If i'm u, i will act blur and pretend that i don't know that he
like me but i will find ways to hint that he is not my cup of tea.
For example, i will tell him that i like this guy or this kind of
guy is so cute (the complete opposite of him) blah blah.
If he confess, then u tell him that u only treat him as a friend.If
he is mature enough, he might not deem the rejection too hard and
could remain as friend.
Anyway some guys are smart enough to realize that u don't like him.
It might not be u giving the signals to him or/and he interpret it
there way. U don't have to distance yourself away but gently help
him get his idea right.. well, see how things go, then adjust
accordingly.
Ok i hope i make sense.
cheers.