Her Boyfriend Encouraged It

1998, my girlfriend's dad walked in on her giving me a blowjob. He knelt behind her, pushed her denim skirt over her ass, pulled her panties down and screwed her from behind. It wasn't until after that I learned he had taken her a few years before. That first time, I came before he did. He let loose with a loud groan and my girlfriend squealed. WE continued dating, got married, had five children. He's father to two of them. Throughout our marriage, they have gone on "dates" together and I get to clean her un orally, which I love to do on occasion. We're all much older now, but we still get together for threesomes.