Seth Rogen has been out promoting his new movie Neighbor's and while he's at it, he has been bashing Justin Bieber as well. Apparently when the two met Seth did not like Justin at all. Bieber responded via Twitter:
Seth Rogan sorry I didnt bow down when I asked 2 meet u was probably a bit shy and didn't want to be over the top but still. love ur movies.— Justin Bieber (@justinbieber) May 8, 2014
Apparently Bieber doesn't have the same opinion of Seth..