How to stop this little mtf roleplaying as me?!!

I'm tired! Every time I do RP, this dumb#ss starts roleplaying as me, writing lines and actions!!

I'm so pissed off right now!

(Image IS related, this is me)

I'm tired! Every time I do RP, this dumb#ss starts roleplaying as me, writing lines and actions!!

I'm so pissed off right now!

(Image IS related, this is me)