TT Button First Hand -- All In

[KenProspero]

I suspect I made multiple errors here -- and would like thoughts as to how to play this.

First hand, on the button. Blinds are 25-50, Everyone Starts with 1500 T. Generally a loose game early on.

Hero, witht he button dealt TT

SB Posts, BB posts, EP1 calls, EP2 Folds. EP3 Folds. MP1 raises to 325, MP2 Folds, MP3 Folds, CO folds, Hero --

I suspect, I should either raise or fold, but I called, hoping to play MP1 heads up.

SB folds, BB folds, EP1 pushes all in. MP1 calls. Hero --

I'm sort of lost with this hand, and suspect that fold is best, but I call all in.

Were both calls wrong? What would others do.

BTW -- fwiw, EP shows KK, MP shows QQ, King on the flop, King on the Turn, and it's time for the next game.