Drink the juice and throw the bottle, this is what the guy thinks. Caste is just a mere reason. After staying together for five years and using the girl the guy is no more interested in the girl. He looks outside and find other girls prettier than her. Five years is a great deal of time. Good guys don't let the relationships go that long, they marry sooner than that. Bahun and chhetri is not much differentiated to marry in our society. It would make some sense if it was bahun with kaami, sunar, gurung, magar or even newar. Still if they are abroad and standing on self foot family accepts. If the guy leaves the girl, he can never b happy. He can not love nobody more than he loved his first girl. I would say avagi keta. Kasto kaatar, luimute, hutiyara rahechha yar.