maybe its just me

I think he could at least let you know he's stopping there on his way home. But as for not wanting him to go there, if that's what you meant, you're fighting a losing battle. If the problem is that he didn't let you know his plans then you should tell him that you wish he would let you know when he's not coming directly home. That way you won't be worried or upset. How you tell him is important. Be nice. If the problem is that you don't want him to visit his parents, I think that's not right. Everyone has a different relationship with their families and if your husband has a good relationship with his and he wants to stop by to visit them I don't think you should be concerned or upset about it. They will not be around forever. This doesn't happen all the time, I hope. Accurate advice depends on certain facts that are not known. I hope you will sort this out and be able to keep a happy marriage.

It's better and it would be a good idea to talk to your husband in a good manner and from heart to heart, do not let it cause problems and be an uproar among the sumi and wife. ask your husband why he chose to return to her parents.

I think that the best you can do is to talk it over with your husband. Do it in a sweet way so that he doesn´t feel he is the bad guy. You can ask him whether someone at his parent´s house is ill so that he feels he must go there instead of to his home.