The last time my son and his friends slept over I fucked one of them. So this time to stop me seducing his friends,my son got his girl to share my bed due to lack of rooms. His girl is 18 with a 32g 24 36 figure. She is dark haired and about 5ft 8ins tall,with long tanned legs. She had just started modelling for a local modelling agency. She had no nightie so I lent her one of my baby doll nighties which was partly see through. As we lay in bed I asked if she was satisfied with my son in bed. She giggled and said oh yes he has a great cock. As usual was sleeping naked, I noticed her looking my big boobs. I smiled and admired her large boobs and slowly ran my hand up underneath her top. She closed her eyes as as caressed her large nipples. I ran my hand down between her legs she opened her legs to let me touch her right pussy. She turned round and sucked my nipple as she slid her fingers into my wet pussy. She kissed me putting her tongue into my mouth as she finger fucked me. She had me moaning and rising up to meet her fingers as I came. She licked her fingers and said it was her turn now. I got out of bed went over to a cabinet and put on my strapon. She smiled and told me she wanted a hard fucking and opened her legs. I mounted her using a lot of gel to get into her tight pussy. Soon it was her who was moaning and bucking against the strapon as she came. We got our breath and cuddled as we fell asleep.