Alright, I'm new to this site, but I've had crazy dreams/nightmares for years. But before you read my dream, I'm an art student, so I carry supplies with me almost everywhere. I don't watch much tv, so I never dream about what I watched last...
I walking through the hallways at my college, but it turns into like an alley. There is another girl there, and she starts talking down to me (I don't know what she said, but it made me angry). She then mentions a guy I used to date or something (in the dream, not in real life).

I'm so mad I knock her down, and we somehow end up at a busy intersection. I take out scissors from my bag, cut off her clothes, and kick her out onto the street naked, for everyone to see.
I then take her wallet from her clothes and go to the house, where this "guy" is living with her. I find him getting dressed with his shirt off. I somehow get him on the ground and tied up. Reaching back into my bag, I take out an exacto-knife (a "razor" on a stick). I tell the guy off, and let him know that "This is what he gets". Starting near the upper right of his chest, I carve "I LOVE ......" and fill up his entire torso, blood oozing (the last word I don't know what I wrote). But the whole time I was doing it, I was laughing and telling him "LET ME HEAR YOU SCREAM"...
And that's when I woke up. This dream has been on my mind for the last week, and I just can't shake it. But I don't know who the guy was, or the girl.