Like any other red blooded guy, I was always looking for a girl to let me CUM in her mouth and if she swallowed it that would even be better! But all or most of the girls I dated were Busty, but none of them let me CUM in their mouth~
I heard some 2 guys in my buddy's BAR that a girl comes in there and if you hit it off with her, she'll let you CUM in her mouth - then show it back to you before swallowing it!
I ended up meeting this girl and hitting it off, going back to my place after the BAR closed we ended up in bed.
She wasn't huge with tits and nipples like my other GF's, then she didn't do the best oral on my cock either! She just did the basic Up & Down on it with her mouth. She did stop for a minute just to tell me that I could CUM in her mouth and she'll swallow it, I never had that happen before!
We kept on going out and in time got married, but since that early time my wife has Improved 100% on her oral style and takes care of everything with her fingers / mouth and tongue, besides moving around to your asshole too!
But as far as I know and what she told me, she has always let the guys CUM in her mouth unless requested not to do so and I'm not sure WHO would not want that done?
When we got involved with our playful neighbors, his wife would do anal sex but not let you CUM in her mouth. But my wife was the opposite and let you CUM in her mouth and not do anal sex!
So just by doing a spouse exchange we got something new of a sexual pleasure! Later in time the wife's both changed their thoughts on why they didn't do certain thing and now do Everything!