You're not a terrible person, I've been in a similar position.

I actually needed to take a step back from my friend in order to preserve the friendship.

Another friend of mine, although an entirely different scenario, I had to set up a boundary and let her know we would not be *****ing about her bf anymore.

Try not to compare yourself to your friend, its one of the worst injustices you could do yourself.

PS. I wouldn't worry about getting flamed on PC, its a safe place, and should you happen to feel unsafe, the report button is very effective.