Bluudud's sin.

Ever since Bluudud caused C00lkid harm, you began growing distance from bluudud and mostly stayed close to C00lkid.

You were always there for C00lkid, being his comforter at every time C00lkid needed a shoulder to cry on.

While Bluudud was only able to watch you distance yourself away from him after. The 'play' fight incident...

Bluudud grew guilt and jealousy as he watched you and C00lkid stayed close together from afar.