Rolling in her grave

Today I went to see my dad to get some things of my stepmothers that he thought I would like.  So today as I was leaving he told me he was in a relationship and that he was going to get married.  Mind you it has been four months.  AND this is the home wrecker that he was cheating on my stepmother with about five years ago.  At the time he got caught he said it was over.  Both my stepmother and I knew it really wasn't. 

I don't care about the relationship.  I do care that its the home wrecker.  And even more that its the home wrecker four months after my stepmother suddenly passed.  I told my dad that I didn't want to meet her.  I cant.  I took my stepmothers side when he was cheating.  I find it morally deplorable that he did it to begin with when all that he needed to do was simply divorce my stepmother and then he could have gotten freaky with every woman in the tri state area for all I cared.

However my father didn't do it that way.  My stepmother has been ill off and on since I have known her as a child.  And between cancers and all the other crap she suffered though he really never held her hand through it.  Then she spends all her money to get him out of debt not once but twice, buys a house, and re-does the house.  And now this person my dad wants to be with is wreaking all the benefits.  All the things she told me I could have if she passed.....Oh my god it makes my stomach turn just thinking about this woman owning them and touching them. 

Maybe I am over reacting.  I don't know.  But it hurts my heart knowing that my stepmother called it not long before she passed.  She told me she thought my dad was stepping out on her again and I told her to leave him.  He certainly didn't deserve her.  But she said she wouldn't because she didn't want this person to win.  Sigh.  I hope to god my stepmother is happier where she is now because this would break her heart yet again.

Now I need to talk to my dad and see if he would for my piece of mind write all of my stepmothers stuff into a will in case something happens to him.  I just don't know how to do it without sounding more like an ass hole to him.