How my [38f]gf got me [35m] past PNC.

About 6 months ago, I opened up to my girlfriend about eating her out after sex. She was a little confused on why I would want to but was okay with trying it. After many failed attempts because I wasn’t able to get past the pnc. She was getting pretty annoyed about it. At this point now she wanted it as bad as I did before pnc kicks in. One night she joking said “what if it was some else cum, then you want want to back out since you hadn’t came yet”. I replied with “ I’m not really sure about that”. I thought it was left at that. But 2 weeks later I came home from work, when I made my way in the bedroom and found my wife and she asked me to get cleaned up and meet her in bed. So I did as I was asked when i meet her on the bed, she asked that I put the blindfold on that she left out. As I did she starts dirty talking me and asked me to start licking her pussy. As I’m eating her I definitely noticed a difference taste but it was pretty sweet so I didn’t really think anything of it. She started saying things like “ do you like my dirty pussy” or “ “I love that you would clean my pussy”. I thought it was her just encouraging me to finally eat her after I came. But then she says I’m going to take the blindfold off and when I do I want you to watch a few videos. She begins to play some videos from her phone. And they were videos of her sucking and fucking another man. I stop licking and when I do she grabs the back of my head and tells me to keep licking. Then she tells me to notice the clothes in the video are the same clothes by the bed. And to look at the time stamp of the video. It was filmed about 20 minutes before I got home. Then the last video was of the man leaving a creampie in her. She smiles and said “ how did you like your first creampie”. I was a little in a state of shock but was extremely horny. Then she says I’m going to give you a bj, if I can get you off in under a minute, cum eating will be a permanent part of our sex life. She began blowing me, literally didn’t stand a chance. Busted in about 20 seconds. She gave me a passionate kiss and push my load into my mouth and told me to swallow. She noticed my cock was still hard so she rode me until i busted again. After I came for the third time, I knew what she wanted so I took my place and began cleaning her up. We haven’t had another man back in but I’m sure it will happen down the road.