I am UNCOMFORTABLE with My Friends DATING!
This relationship Reddit post talks about the OP, who is a woman, who has a female friend dating her male friend. That sounds great, right?
But no. The OP doesn't want something like that to happen. She feels uncomfortable with that prospect. Why? Well, the backstory is the guy, Thomas, has a crush on the OP, but the OP rejected him many times. He got the message and moved on to another girl, Emily, the friend of the OP.
The OP for some reason feels like she's entitled to feel okay with them being together. That's not your business, OP. I thought they were your friends.
Personally, I think the OP still loves Thomas, but she just doesn't want to admit it. I feel like this is the logical conclusion for all the Tsundere out there. If you keep denying your feelings to the guy, the guy will just be taken by someone else. That or the guy's treated as a "backup."