Sure.Telling someone you are well in your couple/expressing no interest to have an affair is declining to be open to a relation...
Dude has serious issues and isna cheater but in this case its not like he continued after his advances were shut down. The post makes it seems like he continued to harass her after she declined his love confessions.
There is also no business relationship between both of them right ? So it's not like she would have to fear retaliation at her work.
I think the last thread already established that he fucked up big time.