Player Boyfriend

Hey,

My name is jess and I have 3 best friends, heaps of friends, but only three BEST friends! Don’t get that mixed up! Lol.
Okay, so.... let’s call one Lauren, another Tirana, and the third one..... Let’s say Karen. Well........
I found out that Tirana used to be secretly dating this guy.... let’s call him Sam.... and then they broke up. Sam was the one who wanted it to be secret. She told me this afterwards btw. And then.... while this was all going on.... Lauren has been going on that she likes this Sam. She was always saying it and made a huge deal out of it if he so much as smiled at her. And well Karen never knew that Tirana liked him, neither did Lauren. But..... Lauren then started ‘secretly’ dating Sam. but Lauren told like almost everyone. and guess what.... it was Sam who wanted it to be secret again. So.... while this is all going on... I’m thinking, well Sam’s a bit of a player. And well I used to think of him as an alright guy. Well.... not no more.
But Tirana doesn’t want to interfere. She didn’t want to tell her because he wasn’t going to tell her. So I was with her. But still.... we both feel really guilty for not telling her because, guess what happened next......
And guess what...... Sam then broke up with Lauren and she was crying a whole night and tried not to the next day at school. She finally told us at the end of the day.
I knew he was a player.
But now what do we do so that he doesn’t do it again??
I hate him so much.... wanna kick his ass............
So yeah.... any suggestions?