Replying to Am i to protective?

me and my girlfreind katherine have been going out for 5 months now. we have neevr been in a fight or anythgin at all. btu nwo in school theeres this faggot whos supposed to be in gr 10 (im in gr 9) who look moved his locked next to hers and is always all over her and shit. and she says no hes not but everyone notices it. im after trying to kick his fucking ass but hell talk shit then hide somewhere. hes a fucking creep. he stands up in the hall and watches her in the mornings and shit? and our school has these things called "in-school suspentions" you sit in a class all day and do nothgin and no aloud to speak or you get sent home. anywas katherine got one for being late alot. THEN this corey fucker goes and purposely gets one to be in the class with her alll day! im going to kill him. am i being to posesive or should i kick his ass? i dont know what the fuck to do!!