Every man needs the boldness of Paul, the integrity of Joseph, and the courage of Jonathan. Those men called to be husbands also need the commitment of Boaz. What our wives need isn't the mushiness of romantic love (though this is important), but the security of committed love.
This commitment is first seen in the fact that Boaz not only allowed Ruth pick up grain in his field, but he also instructed his workers to drop grain for her to pick up. Boaz wanted to repay the kindness this beautiful foreign woman had shown to his relative Naomi.
Ruth kept going back to Boaz fields, but Boaz did not make any moves toward her. So Naomi and Ruth began to push the issue. Naomi had Ruth get all dressed up and sent her out to the field where Boaz and his workers had celebrated the end of the harvest.
Here we discover that Boaz is a man of commitment. He did not give into his lust for Ruth. Instead he kept his distance, and when she did come to him, he respected her. He waited until marriage to sleep with Ruth. He showed sexual integrity, while many men wouldn't have. Boaz also honored the Law when he went to the closer relative and gave him the opportunity for the family land and Ruth's hand in marriage.
We also discover Boaz is a man of responsibility. Boaz worked among his workers during the harvest, he made sure the poor widows, Naomi and Ruth, were provided for, and he took on the added responsibility of making Ruth his wife. The important part here is that Boaz went immediately to take care of the issue that prevented him from marrying Ruth.
That is the main focus husbands need to take away from the example of Boaz. Too often we allow deadlines at work, problems with the house, or even our hobbies to distract us from resolving the issues that haven't crept into our marriages. Right now is the best time to deal with these issues, because the longer we wait the bigger and more messier they become.
Dealing with these issues right away is the way our wives deserve to be loved. They need to know that whatever happens we will do what we can to make things right. This provides them with the security they crave in marriage. Today is the day to follow the example of Boaz.