I didn’t write it, but I did link to it! The Cap/Iron Man Slashy Moments List is here.
However, I want to add on some personal commentary, which is that unless you are trying to evangelize this to your friend and not taking no for an answer (I don’t know if you are doing this or not, so I’m just putting it out there), then who is she to judge what you ship? Next time she says something like “Oh, you ship everything” say “Why do you care? Does it make you feel better to look down on me for that?” and if she says “There’s no evidence for that in canon,” say “This isn’t Lit 201, I’m not being graded on things I enjoy.”
I mean, arguing this point seems like wasting time on someone who, from what you’ve said, is just shaming you for enjoying things. You don’t have to defend your ships to her. I ship Clint/Coulson despite them having spoken exactly twice in the MCU, and I don’t bother defending it because Go Fuck Yourself, That’s Why, I get to enjoy shit if I want to. Your shipping is entirely predicated on fictional people who have been themselves written by anywhere from two to twenty different people over the course of decades. It doesn’t have to be evidence-based. Do I understand Lestrade/Mycroft as a ship? I do not. You know what I do when people are talking about it? I shut up and let them enjoy themselves.
You also don’t have to defend how many ships you have.
Like….so what if you are shipping for the sake of shipping? It’s called Enjoying An Idea. And there’s nothing wrong with thinking everyone is gay. Most people think everyone is straight and nobody gets on their case for it.
And the real problem is that if she thinks you’re sad or unrealistic or handwave-whatever for shipping or for your headcanons, no amount of canonical evidence or protesting that you have very few ships is going to change her mind. She’s found a reason to feel superior to you and she’s not going to let that go. It has nothing to do with the ship and everything to do with making you feel bad for having passions. And life’s too short to put up with insecure killjoys.