My wife was very timid when she gave me oral sex. When I suggested being a little more intense, get crazy , deep throat and take a facial, she threw it right back to me and told me that I should try sucking a cock, swallowing my large ejaculation or taking a messy facial. Eventually it came to a time where I took her suggestion. She even watched because she didn't believe I would do it.
My wife has jokingly said the same to me. She has only swallowed me a handful of times over the years. She knows I love it. When I ask her to do it once in awhile she has told ME to try it for once. My reply is usually "don't tempt me"
My first wife of 25 years would have never suggested I suck a dick even though I had asked her numerous times what it's like to suck on my dick. How does it feel in your mouth? She never would answer me so as my curiosity grew, I ventured out to find out myself. My present wife didn't have to suggest it to me as I told her while dating, I had a "suck buddy" for the past 10 years. She thought it was erotic to be with a man that enjoyed sucking dick as much as she did. She loved watching me sucking on his cock and had joined in many times over the years. She was always fine with it, knowing it's something I enjoy doing and never once did she feel threatened by the many guys I sucked off.
After my wife got me to try anal sex she asked me if I had sucked him. When I said I hadn't she said "try it, you'll like it" I did but she was wrong. I didn't like it. I loved it.