Should I Give Into My Girlfriend's Crazy Demand?

Guy here, but posting in women only because I specifically need female opinions and prefer not to discuss this with other men.

My girlfriend of about 4 years decided to go snooping through my old laptop for whatever reason the other day. She was devastated to discover a collection of sex tapes I had made with various different women over the years. Of course, most of them were from before I was with her, but she had no idea these even existed and was quite upset. She knew I liked to record, as I've made a few videos with her as well, but now she's sad to know that she's just one of about a dozen women I've done this with. We had quite a huge fight over it and almost broke up.

But then she came to me with an outlandish proposal. She admitted to me that she loves gay male porn, so the deal is that if I make a new video for her, with another guy, she'll happily forgive the whole thing and even let me keep all my videos with other girls. She's got a few gay and bi guy friends and plans to pick one of them out for me. She wants to basically direct and record the whole thing herself. And of course, she promises to keep it secret if I agree to it. Apparently it's a thing she's long fantasized about, but never dared to bring it up until now.

Now, I am entirely heterosexual, and not the feminine type of guy either, so obviously this whole thing goes way outside my comfort zone. I do love her though, and I sincerely want to keep her. I also understand how hurt she is by what I did, so if this is truly my only way of making it up to her, I suppose I could suck it up (no pun intended) and do it.

My main concern however, are the unintended consequences that might follow if I go through with it. She swears that it will be a secret that she takes to the grave. She's the only one who will have a copy, not even the other guy involved. As much as I want to trust her, and I do trust her, I have to be certain. She has a full detailed list of pretty nasty things I have to do with the dude, so safe to say I would NEVER want anyone else to ever see this.

Women know women best, so I ask you ladies for your honest input.

Women tell their best friends everything, right? Will she show it to her friends or brag to them about it?
Will she lose respect for me or see me as less of a man?
Will she hold it over me in future arguments, or use it against me if we ever break up?

I've brought all this up to her, and she swears no to all of that, but I really could use some outside advice before agreeing to something so risky. Any and all honest input is appreciated, thanks.