help me find find out why

Question
my friend has two bearded dragons male/female its not mating season for them right now she said but they did any ways the male been biting her cause he wanted to mate so she finally gives in they did it when she weren't home
she came home and there was blood on him and all over the tank so she was wondering why and if it was normal that was on the 25th of this month and they also did it again yesterday and the same thing happened if you have the answer for me and her i will really appreciate it thanks

Answer
 That is the reason that I do not believe that a male and female should be housed together.  It is not mating season and the male is trying to mate with an unwilling female that has no where to hide from him.  They should be separated into equal set-ups and preferably in different rooms.  The female either bit the male to make him leave her be, or the male bit the female because after mating once she did not want him again and he forced the issue.