How do you know your wife love you?

If you even have to ask that question it's kind of obvious that you don't love her! Spend more time with her and show her how much you care. if you don't feel comfortable with her any more you need to tell her how you feel. Communication is really important in a marriage.

If you are newlyweds you might have gotten married to fast. If it is a long term marriage you may be a bit bored. try to spice up your love life. It'll probably help a lot.

Hope I helped!