I'm going to talk to my friend's ex despite her warnings and consequently ruining our friendship over it
Why are you going to talk to the ex then?
I'm excited about getting myself into more trouble
You should not be excited about getting into trouble. Hurting a friend like this is rude and there is no point to it.
It's only going to be drama, which is never bad
Drama is bad to have in a friendship. You should be more comforting and supportive to your friends by not wanting to hurt them.