Honestly, what's described in this article seems to cross into sexual assault rather than just harassment. Moving into blatant physical contact, such as kissing, is escalation beyond suggestion and inappropriate comments.
However if she's just sitting in his office and out of no where he lays one on her cheek? Yeah that's weird. Again, context.
No. It was unwanted contact. It is, at a minimum harassment, and at worst assault.
Arguing context about one bit of behavior in the context of a pattern of harassment is insulting to a victim of harassment.
Jumping to conclusions without understanding the context is an insult to those falsely accused of harassment.