Who is the best couple in Fairy Tail?

Who is the best couple in Fairy Tail?

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1) Gejeel x Levi

want more picture about this couple?

2) Zeref x Mavis

Want more...?

3) Gray x Juvia

More Lovey dovey...? want more?

4) Jella x Erza 

So sweet, right? want more...?

5) Natsu x Lucy

So cute!!!!! Want more...?

All five couple