And this is one of the best reasons!
In this hilarious clip from the film, Franco's character Dave Skylark is interviewing rapper Eminem.
During the interview, Eminem casually comes out
"I miss you, and I’m sorry."
…Which was an obvious nod to his perpetual 'I'm sorry' for stepping out on estranged wife Paula Patton.
The performance was full of tears, sniffles and his lady's name in lights at the end of the song.
And if it sounds like we're making this shizz up, you've never been so wrong.
Watch Robin get emotional again in the video (above!)