....wtf?!, gimme your opinions on this, good&bad Options

[dood?!]

about a month ago my g/f broke up with me. we are both seniors in high school. i'm 19, she's 18. i, being the devoute b/f, was heartbroken. got it? she broke up with me b/c she felt she didn't have time for me. do you buy that? i did at the time, don't know 'bout now. a few days ago, i find out there is a guy (a sophomore) claiming to be her b/f, or saying that they were going on a date. (i don't know the exact story...yet). i was like WTF?! (hence the name of topic) so let me get this straight, you don't have time for me, but you have time for a guy who is at least 2 FREAKING YEARS YOUNGER THAN YOU?! apparently i am the only one who doesn't "know" this. all of her friends (who appear to be my friends, not so sure now) seem to know this, and none of them will barely talk to me anymore. so obviously something is up. COME ON! THE KID CAN'T EVEN DRIVE YET! DO YOU KNOW THAT'S ILLEGAL?! you're 18 and he's not even close to 16! not to mention he's a freaking pot head. he's probably going to try to spike her drink, get her drunk and screw her. in which case, since she can't drink aclohol (literally makes her puke...A LOT), her dad kills him, game over.

so here are my options.

1) i can bring this subject up in one of our limited conversations. hurt a lot of feelings, piss off a lot of people, and ruin some friendships, but get the truth.
2) ignore it and let her get into another mess. (becuase it's not my place)
3) or plan K.T.F.S.O.O.T.K. (kick the f****** s*** out of that kid)

so please tell me what you think of this. i don't care what it is you say. if you call me obsessive about this girl, so be it. her friend already called me that. if you think i'm right, cool. and which option(s) should i take? because with the mood i'm in right now, i'm thinking options 1 and 3. i say 1 becuase i can make sure we never see each other again, so that wouldn't be a problem, and 3 because i feel like it.