My girlfriend wants me to pretend to rape her (like roleplay) but how do i do it any tips and have you tryed it im doing it tonight

this is actually a more common request then you might guess - however some people refer to it as being in control. Have fun but be safe - have a code word - like "red". The problem with that role play is she might start to feel uncomfortable and say "stop" you might think that she is playing along - and things can turn ugly very fast. So have safety word that way if either of you feel uncomfortable you can say it and it mean - Stop.