A/N: This is a NaLu related story. Please skip it if you do not like Natsu x Lucy. Thank you!!!
Gajeel: I dare you to call Lucy "sister-in-law"
Gray: Oh, yeah! Since Natsu and Lucy are getting married. Okay. Deal!
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Gray: Hey, sister-in-law.
Lucy: S-sister-in-law?
Gray: Aw, shit! He hasn't asked yet? Crap, nevermind, just forget what I said.
Lucy: wHAT!?!?
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Natsu: GRay!! WHAT DID YOU TELL LUCY?
Gray: IT was GAJEEL'S IDEA!!!
Gajeel: Uh, crap, NO IT WASN'T!
Erza: *grabs Gajeel's hair* You, have got some explaining to do....