If nothing else, you should thank him for distracting you in the time of the loss of your dad. I am sorry you're going through this. What a $#%&.
ETA: I forgot to add the antics of PLJ exes I know of:
(These are exes of friends and relatives.)
1) Former husband of friend called because he was getting re-married (three months after the divorce) and wanted to know if my friend still had the cake-cutting set, toasting glasses and unity candle holder they used in their wedding. He wanted to re-use them in his second wedding. He said, "Well, it's not like you're using them!"
2) Another friend's fiance broke off engagement because he "wasn't ready" for marriage. He said she could keep the ring, which she did. Six months later, it seemed, he was ready for marriage and wanted to propose to someone else. He called and asked for the ring back. Friend blurted out, "You're going to re-use the ring?" He acts all offended and says, "No! I'm just going to use the stone! You can have the setting back if it's that important to you." She said no. He threatened legal action, and didn't follow through. The other girl declined his proposal after hearing that she was going to get a recycled ring. Ex loudly blames Friend for "ruining his life" by being so unreasonable to anyone who will listen.