The first time my wife and I masturbated in front of each other happened about five years ago. The company I was working for at the time transferred me to a different city for a few months, to help out with a project. They were very reasonable about it and rented a nice house for me and the family.
Soon after we moved in our three year old daughter came down with a cold and wanted to sleep with mummy (as children do when they feel under the weather) so I decamped to the spare bedroom for the night. The bed in this room was a bit weird because it had two mattresses on top of each other. Obviously the owners of the house had a spare mattress and didn't know where to put it, so they piled two on top of each other. This made the bed very high, at about waist level.
After my wife settled our daughter she came to say goodnight. We kissed and cuddled and I started feeling quite horny. She said she was a bit sleepy but I could do whatever I liked. I started stroking her gently and after a while I felt like doing something I had never done before. I have always been a visual type and I liked spending a lot of time playing with her pussy, looking at it, 'investigating' as she would call it. So I thought it would be nice to combine the joy of looking at her pussy with the joy and sight of me coming. So I gently pulled her to the edge of the bed, spread her legs apart and stood in front of her. She looked beautiful, all pink and wide apart.
'What are you doing?', she whispered.
'I want to squirt on your bits', I whispered back. 'Do you think it's a bit silly?'
'No, go on, if you want to.' she giggled. 'Do you want me to help you?' she asked, then she reached down and pulled her labia apart a bit more so that her vaginal entrance was all exposed. I thought this was brilliant as it formed a little hole as a perfect target for what I was planning.
I was already quite excited so I didn't need a lot of stroking. It only took a minute before I started coming, spurting white blobs all over her pussy. Some of it landed a bit higher, on her fingers but most of it covered her pussy in white cream. It then started running down and making a little pool of semen in the entrance hole. I though it was one of the most erotic things I had ever seen.
I wasn't sure how much joy she was going to get out of it but to my surprise and delight she started groaning as I was coming, giving out little cries of pleasure and then announced that she was really turned on by what I had done, so she started rubbing herself. After a while she rolled around, now lying on her tummy. She had told me once before that she was only able to rub herself to orgasm if she was lying on her front, so I guessed se was getting close to coming. So instead of watching her pussy I was enjoying the sight of the cheeks of her bottom going through some interesting muscular spams. Then her rubbing intensified and finally she gave out a long loud groan and went all floppy on the bed.
I lay next to her and and we had a nice long kiss and she told me that she thought that was a wonderful experience and that it was a real surprise to her how great it felt. It was a great way of discovering something new after a few years of marriage. From then on it became part of our bedroom activities. The next time we did it she put on black hold-up stockings and the sight was even more incredible.
I have very fond memories of the first time we did it as it was so gentle and yet exciting.