New england patriots or green bay packers? which one should i support in the nfl?

i live in europe. please give me some information about those teams' fans and their history. which team is more supportable? i'm a huge boston celtics fan btw. i know that boston is in the new england region. but to be honest i liked packers more than pats. would it be weird if i support packers while i'm a boston celtics fan? thanks...