Sonic and shadow have been dating for over a year now and they have a cute bond that everyone in the crew is jealous of. Nobody has seen sonic's vulnerably upset side except for shadow. When Sonic gets upset in any way he will become quiet. People think that's just Sonic's way of calming down but it's quite the opposite. When Sonic feels overwhelmed he will hide his feelings and when he's alone with shadow he will break down and shadow will try to comfort sonic the best he can.