Men why do you do this

Hello, I have to say that I really do enjoy the company of men, but why must you all act so crazy. My friends guy had a web page and he had himself down as single and she talked to him about it and he said she was overreacting and them he started an argument to make her have to forget about what he was saying but she told me "well, if he thinks i am saying sorry he can forget it" i guess he must huh? so men why do you have to turn the tables when you do something wrong?