Su's dad felt that Su's mom's words were somewhat inappropriate. Though Su Man couldn't find a boyfriend due to Li Li, it wasn't entirely his fault.
Among the boys of her age who know Su Man, who hasn't been hit by her?—They are all scared of her, who would dare pursue her?
However...
On the other hand, the Li Family's actions in recent years have indeed made the couple uneasy.
A few years ago, they would still bring up the childhood engagement with a smile, discussing how great it would be to become in-laws. But now? They don't mention it at all.
Actually, if you think about it from another perspective, Su's dad can understand the other party, because the key issue is Li Li.
It's because Li Li hasn't clearly expressed his stance that his parents can only make jokes about it and can't take the liberty of accepting Su Man as their daughter-in-law.
