While I could see Thief, your general attitude (generous, cheerful, willing to go above and beyond for a bud, nice, but not insanely nice) is making me see Soldier. As the above said, Thieves are still bubbly and kind, but are a bit more materialistic. Your initial "helping a friend so they could get more money" really struck me as a kind Soldier-type (Tidus and Zack, for sure) and as I read on, I kept seeing further examples. :)

- Team White Mage