Thanks for your suggestion,

the big burden will hunt him forever is it's he fired his friend when company started due to his friend's fault, he fired his friend for company's interest, now he will think he will never have the chance to tell friend to forgive him and he would never forgive himself,plus when his friend passed away, his friend left two little kids, the youngest is only 3 months, so now my boyfriend would think how to raise these two kids and his friend's wife, that is why all his friends would think he would leave me to take care of friend's family, be together with them, raise them, maybe not love, but responsibility and guilty.