Is it normal for me (a girl) to want to peg guys?

Take charge and go ahead and peg your guy. Make him a deal don't suck him off until he gives in and bends over for you! Do it alone in privacy so it is between you both no one will know! Go slow use lots of lube and use a smaller dildo! Try it by hand first! Maybe even give him a prostate massage with your middle finger while you jack him off to test if he likes anal play!