Do i must to hug my wife

Hugging Improves Relationships.
It's a deeper, more intimate level of connection that you don't get from talking. The second reason is that physical touch causes the release of the love hormone oxytocin, which improves bonding and trust and makes people feel closer to one another.
You should hug your spouse every day as an act of showing your love to them. Giving a hug is one of the simplest ways to show your love. Anytime, anywhere a hug can is a healthy reminder to your spouse of why you love them so much.