Yeo was overly sensitive which made sense since he got cheated on in all his relationships and ended up heartbroken all the time you tried ur hardest to prove you weren't like the rest but it was hard for him to believe right now, you were both arguing about him thinking you are planning to leave him for another "why do you even love me..? im a horrible person and boyfriend." he sobbed all he wanted was to be a good bf for u.