Bloody hell... WTF did Eko die for?

After realizing that the Yemi was actually someone else, it occurs to me: who the hell wanted him dead?

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Tom: Kate, you're not my type.
Kate: Are you gay bearded boy?
Tom: Nope, just Bea and Ben. What 'bout you?
Kate: Sawyer and Jack.
Tom: Why Sawyer first?
Kate: Jack's losing it, that's all.

Jack: Sawyer got my damn girl...
Eko: I will pray for her.
Jack: Pray for her what?
Eko: Pray for her to come to you.
Jack: Dude, you don't even know her name!
Eko: Don't talk about my daughter Yemi!

Ben: I love you Juliet!
Juliet: I guess I'm out of the love club...