Things to do every day of your lives: Tell her you love her (very important). Tell her she is the most important person in your life. Tell her she is beautiful. Give her a hug.
At least once a week do something for her she does not expect like the dishes, clean house, etc. , take her out to dinner at a nice place and tell her you want the world to see how great she looks in that little black dress or something like that.
NEVER bad mouth her family and friends. Pretend to listen to her when she tries to talk to you during you favorite TV program. Do not forget anniversaries, birthdays, etc. . A couple times a year send flowers when she doesn't expect anything. Do not ever yell at her or tell her she is stupid or anything like that, talk about issues after you calm down. I have learned these lessons the hard way. Rick