I need major boy advice!!! Please give me your opinion!!

Ok so a girl breaks up with a guy because she thinks he is too clingy and gets in a lot of trouble and bad grades. It just wasn't feeling right for her so she dumps him. She is really really upset. The guy is upset for a while but then seems happy even though he isn't. He claims that he still has feelings for the girl but them a couple hours later he goes out with his girlfriends best friend. He later claims he liked his girlfriends best friend while he was going out with his ex. Whose side would you be on. The girls or the boys.

Neither.

I'd ditch the pair of them and because I couldn't be arsed with the drama.