I think sever. I don't think it's the easier option but it's the more realistic.
well he will take his broken heart to the club and if he plays his card right he wil bring home his new mommy tonight good night alice
well to be kind you will just be a found memory as he will to you soon as you both get what you need
well it all depends on the facts
did he hurt you? cheat? you him? then sever ties
otherwise try to be friends
Depends on who ended it.
After 1.5 yrs and he didn't ask you to join him, then FORGET HIM.
Don't sever all ties just yet just tell him you need some time away and if you feel that severing all ties is right for you then do it :)