To think it creepy?

That a 50 yr old man is posting all over a 20 year old females Facebook page?
Joking about how he wants her to do his hair (His is bald and she is a hairdresser. Meant to be funny ) and generally just being overly interested with her?
The 20 year old has a boyfriend.
The 50 year old man has a girlfriend of the same age and her daughters best friend is the 20 year old spoken about.