Came home from a hiking trip early my father in law bud car was in our driveway. I walked into the house to find my wife and her father my father in law bud 56 years old mostly grey hair loose skin right between Amanda legs both nude having sex I freak out for a second. My wife Amanda 34 not looking away from me not saying a word just a blank look. I started to freak out again and bud just started humping her. On the couch missionary style. I told them off called them sick and left. I came back several hours later half drunk looked at my beautiful skinny redhead wife she just lay in a nighty. It started when I was 13 she said I became my mom after my mom died taking on everything she did cooking cleaning laundry raised my little brother and sister. I had seen my dad nude in passing him in the shower or me in the shower and him taking a piss. Or his door cracked and getting dressed. I thought he was handsome just before I turned fourteen creeping into his room I got into his bed wearing my white school stocking and that was all. My breast were already a c cup and some pubic hair. He did not notice me at first. I ran my hands over his hairy body he woke up a little and I took his penis bin my hand and kissed his chest. Before long he ate me out and I learned how to suck him off. We lay down a towel he took me for the first time it hurt alittle. But after that night we had sex several times a week until I turned 18 then I went to college. It bothered me I suggested therapy or consoling getting help. But she acts like this is normal....I know it's not but is father daughter sexual relationship normal dose this happen