co worker bullies me says he wants to be my friend?

Get him a Christmas gift

Ignore

Maybe he does. Just like being mean to someone is a way of flirting, it's also a way some people try to make friends. That's because they don't think they're being mean. They think they're being funny--that it's being taken in good fun. Clueless? Yes. But it probably comes from the way they were raised, like that's how their family interacts.

Accept if you want