Just another married lying POS

Just some back story on this fool. He was my husbands best friend until he tried to sleep with me while I was pregnant with my child. Meaning he asked to hook up and sent me nudes after I asked him to leave me alone or I’d bring my hubby into it and not wanting to hurt my husbands feelings by telling him his close friend is a lying POS, I really didn’t want to do that but I didn’t want to hide things from him either so I told him. Fast forward to over 2 years later I’ve blocked him on multiple accounts and he still finds a way to get in touch with me(creates a new one). I’ve asked him to leave me alone. He’s gone as far as pretending he is someone else and telling me my husband is cheating on me at work then saying oh jk just to get my attention Etc etc. To make things worse he’s married to the girl he’s been with for years now and my husband told her when it happened and she blew it off. WHY do people have to be so disgusting and rude. This is just recently there are tons more.