Bellerin ruptured his cruciate knee ligament in an off-the-ball incident during the win against the Blues last January, and made an emotional return in a Carabao Cup game against Nottingham Forest in September.
"It wasn't him that told me this, but someone came up to me after that Chelsea game and said, 'Oh just so you know, when Rob saw you get injured he started crying'", said Bellerin.
"And I thought it was crazy. At the time I'd got injured, I knew that I'd hurt myself and I'm not someone who dwells on things too much. Half an hour afterwards, everyone was feeling sorry for me but I didn't need to hear it because I knew I wasn't OK.
"His emotion at the time just shows how much of a family we are in here and how just seeing your team-mate going through something like that can hit you."