I'm a bit confused by the message in your post. Are you going to tell him or not?
You are lying to H about your dad to keep him from running from his fear (of what? his own mortality?) or running because he is simply unwilling to deal with the pain life brings us.
This is a lot like faking Os with H to keep him from running from his fear of sexual inadequacy or running because he is simply unwilling to deal with your authentic sexuality.
You are building your M, why would you want to give it such a poor foundation?
Treat H like a man you would want to be married to, not like he is a spineless, insecure, creep. Be honest with him, be direct, and apologize for withholding this kind of information.
