Blow job suprise

I have always fantasied about being with another man, however my girlfriend knew little of this, with her sticking a finger up my arse about as close as I have got. My names Rich and am 5ft 10, and my girfriend is Stacey, nearer 5ft 3 and with lovely pert tits.

One day we got home from work as per usual and had some food before settling infront of some TV. Stacey changed into a pair of her tiny hotpants that hardly covered her gorgeous arse and a tight fitting top which with no bra you could just see the outline of her nipples.

The door-bell rang which was strange to me as I wasn’t expecting anyone, however Stacey jumped up to go and answer the door. It was her friend Jo from work, who she had invited around to lend him a book- or so she said. Jo was a little taller than myself, around 6ft tall but wasn’t as muscular. I had heard stories from work about how Jo was good looking and had a way with the ladies, and I could tell he was excited to see Stacey nipples protruding from her top. Just as we were starting to talk my phone went and I was being called away- it was a local job so I left Stacey and Jo in the house and said I would return in an hour.