Wife had never masturbated in front of me before...
We had been together for over fifteen years, and always enjoyed a healthy, if reserved, sex life. After the kids were born, sex became more difficult, as work and kids are exhausting. She works long hours and we had a hard time finding time to play. I coped fairly well, as I have masturbated pretty much daily since I was a teen. My wife had always denied ever touching herself, and since she was raised Catholic with four siblings and no privacy, I tended to believe her.
I had been brave and jacked myself off while she watched one morning while getting dressed, and it felt great to share that intimate act with her. Definitely embarrassing, but she watched, and 'helped' by exposing her pussy and gyrating seductively, but she didn't touch herself. I did it again a few times over the next six months, but she said watching me really didn't do anything for her sexually. I encouraged her to masturbate while I watched but she refused, saying she preferred to have me touch her.
One night I was playing with her pussy. I love to do it to her. I sat back and just looked at her, her legs spread wide, glistening with her juices, her small pussy lips slightly open and her clit just visible at the top of her slit. I absentmindedly stroked my cock as I appreciated her sexuality. Slowly, her hand moved down her belly, making small circles as she moved it ever closer to her pussy. My cock grew harder as I watched, fascinated, and I gripped my cock tighter and rubbed my balls as well. Her hand finally reached her lips, and she very softly circled her clit, just lightly brushing her pubic hair. I looked at her face, she was looking at me with a smile on her lips. I was afraid to breathe! I could have cum right then but I wanted to watch and enjoy as long as possible so I slowed my stroking to back away from my orgasm. Precum was oozing out of my cock, and I used it for more lube as I jacked myself. Her eyes were now closed and she was moaning softly as she continued to rub, occasionally running a finger down her slit and dipping into her pussy. When she ran her finger back up to her clit, it was slippery with her own wetness. She shuddered and moved her fingers more quickly, and my hand matched her speed as well. She arched her back and then moaned loudly as she neared her orgasm. Suddenly, she threw her feet up in the air, her knees against her chest, and her fingers were all over her pussy, rubbing her clit then her slit down to the base and back up. We both came at almost the same time, and as my cum landed on my stomach I looked at her face, and the smile had become an ear-to-ear grin. We both collapsed together and cuddled until we fell asleep.
She now masturbates while I watch every week or so, she knows it makes me hard and horny. I've bought her an assortment of dildos and vibes, even butt plugs and other toys, and our sex life has definitely got less reserved. She has taken a vibe into the shower with her occasionally, and now she masturbates while alone from time to time. I still love to watch her get herself off, it's a wonderful expression of trust between two people.