Whatever form of sex you are engaged in being able to cum together is the ultimate orgasm sensation.
Since I experienced my first ejaculation I have masturbated almost every day, many times more than once. Well, why not?
If you and your partner aren't comfortable masturbating openly and/or together you are missing one of the most intimate aspects of sexual satisfaction.
My second wife was also an avid masturbator. Whenever one of us was in the mood we were always free to do what comes naturally. Often times we might do it alone and never minded being caught. When we were caught the other could quietly watch, help the other get off or join in and masturbate together.
The sensation of watching and to see the facial expressions, sounds and body movements as one of us masturbated and climaxed usually sent the other over the top.
She and I were cum addicts and loved seeing cum shots on videos and especially in person. Many times when we were having intercourse or oral sex she would ask me to withdraw so she could watch me cum.
She admitted when she masturbated she had her most intense orgasms watching loads of cum shooting off. We usually timed it by telling the other when we were getting close. When one of us was getting there we would say, 'I'm close to cumming, are you?'
Whatever form of sex you are engaged in being able to cum together is the ultimate orgasm sensation. Her favorite places to see and feel my cum shoot off was on her tits, stomach or pussy.
I'll leave how we usually cleaned up to your imagination.
I'm getting close but I'll hold off until later so she can watch.