I don’t normally respond to posts in this subreddit but I have to respond to this. Most of the people responding to this subreddit are bitter or out of touch. They want you to focus on the half of this situation that is your ex and ignore the half that is her father. 

A wake is about the person who died. Period. Not their family. Not their friends. No matter how difficult they may be. This man has made an impact to you and you’d like to pay your respects. You’re going to that funeral. 

Let this episode be the final bit of closure for this chapter in your life. Be respectful to your ex. Be respectful to her friends. Go in there with your head held up high. And once it’s done, turn your back and walk away.

This will make you stronger. Too many people in this thread reflect the current mindset of running away or ignoring things that cause them stress. This is a very weak mindset. If you want to honor this mans life than that’s what you should do. 

Best of luck.