i can agree, its fucking annoying
Especally when they favo their boyfriend/girlfriend

I cant really say much because i have once favo'd a friend because they needed some firsts

Trolling is allowed, and favoing is trolling. True.
But sometimes it really gets out of hand and it's better to leave the room than get mad like crazy. Don't report every single person that is favoing, but favoing on like, all maps, can be a problem that deserves to be reported. Also if you're the only one that is truly bothered by it, reporting is nonsense. If you see more and more people being bothered, it's good for you guys to report the person and call a mod.
Sure, favoing is not so important and the worst thing a mod can do is kick them out of the room for a while, but at least you guys will have some peace.
To be honest, I sometimes favo my friends too, but if I see too much people getting mad, I eventually stop. You must know when to end something.