Effects of a Full Moon

Matthew has been a werewolf since he was a child and he's dealt with it. Nathan is the only one who knows his secret, they haven't even told Mateo or Dan.

But one full moon, everything changes for the band.

(eventual) Matthew/Mateo pairing.
(possibly) Nathan/Dan pairing.

Disclaimer: If I owned them, I wouldn't be writing this, would I?