End My Life

Levi Ackerman, a senior in Sina High School who is constantly being harassed by a certain jock with multicolored eyes, Caribbean blue and another Amber one. His name is Eren Jaeger. Levi isn't exactly a weak willed person, so why can't he force himself to fight back? Is it because of their childhood friendship memories? The pain of betrayal? The little hope that he still had for everything going back to the way it was? Or simply due to an unforgettable obstacle, love?
Levi- "We made a promise that we will forever stay as inseparable friends.. I thought I could trust you.. You said you wouldn't leave me no matter what. So why? Why did you?"
There's so many ways to relieve pain. A shot to the head would be too quick. Cutting or maybe even taking pills. Those have got to be better choices than to live in a cruel world where everything is unfair. But what is the true reason behind all of this. Why did Eren ruin the life of someone he had feelings for.
Levi- "I regret it so much. If I could turn back the time I would've never became your best friend.. I would at least go through less stress and pain."
What changed between these two? Is this really what Eren intended to do. Break Levi.. His sanity.
Eren- "You're the one who started it all, you brought this to yourself Levi and now I'm going to put you through the same pain that you had me in."