Sharing Cum

Birthdays, fathers day, mother's day, Christmas, New year and other special days too. But mostly our wedding anniversary, I share my mouth, pussy or asshole when its been full of cum, with my husband.
I make sure he either shares a passionate kiss, or I demand he goes down on me to tongue my pussy and asshole.
And the reason I have this obsession with him sharing my lovers spunk, is two days before we married (I've since found out) he fucked my older sister.
If my father wasn't so ill I'd have broken their little secret already. Unfortunately my father dotes on both of his daughters, so I get my revenge on my husband with various men, who are more than ready to fuck me. One being my husband's best friend.
My latest lover however is someone who my husband despises. It's our fifty two year old neighbor Rob.
He's easily the best lover I've ever had sex with, and he's not the biggest in the cock department. It's how we react to each other sexually. Every time we fuck he makes me feel so sexually alive and never ever fails to make me orgasm time after time.
My husband is not a patch on how Rob fucks me. So when my father does pass, I think my older sister and my husband can have each other for good. Because I'll be making Rob my permanent lover.