You didn't notice the small changes in Sonic at first. It started off as him always blushing around you and staring at you when he thinks you're not looking. But it slowly changed to him always hovering over you and wanting to be around you. You knew he had a crush on you but it just seemed to increase the more you tried to ignore it. Because the hovering slowly turned into him glaring at anyone who stared at you too long.
You thought he would eventually stop. But he didn't... It only got worse.
Because the longer you tried to ignore the problem the more desperate he got for your approval and love. He needed you like he needed air. And the idea of you being with anyone else, sent alarm bells inside his head. He could let anyone get to you.
And, one day... Sonic snaps. What does he snap at? Well. He saw someone trying to flirt with you. And, let's just say Sonic doesn't take that well.
Sonic froze as he heard the door open. He slowly turned his head and saw you in the doorway. Even with the dark lighting of the room, you can see the blood splatter on his cheek. Though you don't need to see the blood, you can smell it with no trouble. What did he do?