OMG GUYS! after sooooo much speculation i think i have came to a consensus about the greg tea. i think that based off spoilers from many outlets (reddit duh, previews, acceptable stalking, etc) that greg leaves likley because he is jealous of katies relationship with blake. it explains his moms stuff and his hesitation abouy discussing the show. it explains why katie says there will be a villain bigger than thomas. (i can confidently say as of last night 7/12 episodes that there is NO POSSIBILITY for a villian bigger than thomas besides greg. lol im willing to debate anyone who suggest otherwise about that) im guessing there will be some type of luke p 2.0 situation. and i am betting money on it.