(SPOILERS AHEAD! DON'T READ FOR YOUR OWN SAFETY!)
if my memories isn't leaving me:
"what happens with the gangster and actor?"
After a Battle and some punches,The actor and the gangster became close friends at the end!
"do they get their life back or do they stay as actor/gangster?"
Yes! They get their lifes back!Even better! Moogil it's raising hundreds of tomatoes! (I think) Even writing each one in his diaries
"does anyone one the actors life realize it isnt him??"
They had many suspicions, what's funny is that taeseong introduced himself as moogil, meeting moogil in person, if I remember correctly it was a event where they had to act, the producer wanted to make a new serie, oh well moogil won and taeseong WAS BLUSHING RED! POOR GUY.
in addition I want to say another important event before the one year time skip, in a fight with taeseong and moogil(where taeseong won, why? Before the fight,The manager got a baseball hit on the head, and why the manager? He got kidnapped) taeseong SNAPPED then began to fight the ones who hurt the manager, then after going down the stairs of the building (oh yeah I forgot to mention they were in a building wih many roofs, 9 maybe, then after going downstairs, taeseong was carrying the manager, he met the real moogil, he fought taeseong afterwards they made peace, then making an act and poof! One year skip, they are the closest friends!
I'm SO SORRY FOR THE UGLY EXPLANATION, BUT THAT'S ALL I CAN SAY!

This comic has already a finale! In total is 70 chapters, NNNOOOOOOOOOOOOOOOOOO9OOOOOOOO