Up close and Personal

I work in a retail establishment...
and a particular older gentleman from
a local Kiwanis club comes into my
work and stands REALLY close to me.
At which time he flirts with me.
He has also given me a couple of his
I do not know anything of this particular group.
And am unsure of how to properly let this
gentleman down gently.
He has made some of my fellow co-workers
jealous and angry.
Do not want to report him to management...
since he is probably a lonely older gentleman.
Your advice would be greatly appreciated.