My wife and I have been married for 9 years. She is fairly conservative although she can get crazy at times. I am pretty sure she doesn't masturbate much since she can have sex whenever she wants but our kids keep us pretty busy.
The funny thing is that even though she is quite conservative, she knows that I masturbate a lot. She is ok with it and she even helps me.
Like most men, I wake up horny. If she isn't in the mood or if the kids are demanding attention she will offer to get me some kleenex and maybe even let me squeeze her butt a bit before she leaves. I always feel a bit guilty jerking off while she has to go but I get over it. I generally have bigger orgasms knowing that she knows what I am doing than when I just do it by myself. For a while she used to go for walks with her sister on the weekend mornings. One morning after she had got some Kleenex for me and then gone out for this walk I asked her if she had thought about me masturbating while she was on her walk. She told me that she had not. I was disappointed, I thought that she would have a secret grin thinking of me while talking to her sister about whatever they talk about.
Another thing she will do for me is more kinky. I have some handcuffs which I bought for her. We didn't use them very much because I don't think she liked them but I found another use for them. She has helped me do this. She puts one of the cuffs on my arm. The other she puts around my penis right at the base making sure that sack is also above the cuff. This ensures that the only way the cuff can come off is be removed manually. It cannot slide off. When this is on I then jerk off with the cuffs clattering away. Sometimes she will let me suck her tits or vagina while I am doing this. This always makes for huge orgasms, even though I feel silly after I am done.