He does like her, you could see that in today's epi, even though he tried to conceal it, he wasn't all that successful.....the problem is that gur's blow-up on stage was beyond ridculous, and no sensible guy would even look twice at a girl who said all that to his mom, and whom he has just met .....
I dunno if u r a guy, or a girl, but what would you have done in yash's place, imagine ur mom in place in of yash's mom, and suppose someone says all those things to ur mom, would you forget and forgive????? whether your mom was wrong or right is not the point, but the mere fact that someone whom you were considering as a potential life partner, disrespects you mother this much and you could just act as though nothing has happenned...i know i couldn't have, and what about yash's other family members, would they have liked yash forgiving gur, and still carrying on with her, after what they must have seen????? i don't think so....