I pretended to accidentally show my gf's nudes to my bff

First off, this is no porn story. And secondly, my girlfriend is super hot with a nice apple ass and a pair of big perky tits.
So yesterday, I pretended to accidentally show the nudes of my girlfriend to this very trusted best friend of mine. I sent a full body nude shot and then a a face shot wearing a skimpy outfit to my friend, then I went like: oh shit man, wrong window, sorry! please delete them. And in order to delete them, he had to tap and hold the sent photos in order to delete them. Hence it's positive that he's seen the pictures quite clearly.
The amusing thing is, this best friend of mine is quite nerdy and good natured. He actually doesn't watch porn and is a total momma's boy. Being his best friend for like 10 years now, I'm positive the only nude body he saw was his ex girlfriend's. Hence it's like a forbidden treat to the eyes for him. And the weird thing is, I feel pretty good doing what I did. I know he won't tell anyone, and has deleted them. One more thing: Let's get one thing very clear: I love my girlfriend and I wanna marry her and be with her for the rest of my life. She normally loves it when I take the initiative to show her off, so I am pretty sure she would take the accident part into consideration and actually be aroused by this. It just felt like I had to do this one thing once in my lifetime. I know the next time I take my girl at a hangout with my bff, he's gonna remember the nude shots he saw of her, and he's gonna think of her nude and all, and that's gonna make him horny and give a guilty pleasure at the same time haha. And I think that's hot. idk why but that turned me on a lot. I don't plan on doing this again, neither with him nor with anybody else, but I had to do this one thing. Is this normal?

A bit of a prequel:
Let me tell you guys about how my girlfriend loves being shown off. We travel by my car, and we have a chauffeur. Normally, I let my girl wear skimpy tops or tops that can be easily opened, under a shrug or an abaya (since she doesn't wear exposing clothing in public). When we get into the car, I request her to take her shrug off so that she's exposed in her hotness. Normally she wears tops that can be repositioned easily to expose cleavage, and these tops are almost always sleeveless to the extent that her side boobs are visible. Through the rearview mirror, the chauffeur can watch everything. I usually take her tits out and suck them, she gives me head, that kinda stuff. All of this is observed by the chauffeur. I even stripped her completely naked in the car and fucked her(though the chauffeur was outside). but when I asked the chauffeur to enter the car to turn on the air conditioner, I covered my girl with a thin small towel that barely covered her tits and pussy. The chaufffeur saw this. Then I removed the towel from her chest and held the nipples and then called out to the chauffeur to leave the car. The chauffeur responded with a backwards glance at my nude girl and then walked away. All the while my girl was aware and she found this hot, or more like she submitted herself to my kink. So compared to all this, what do you think about the picture sending accident? Do you think she'd be fine if she knew, especially after we explored so much? Please comment. Your opinions will be much appreciated. :D