The Bible tell husbands that they should try to understand, try is the key word I think, so seems like this is keep her happy. It also says to do the hard and manly things for your wife because she is not as strong, which isn't always the case these days. Respect your wife is in there as well, seems pretty important. The Bible also tells you to do your husbandly duty and do it well. Last passage I found says he should provide for his family.
"A man should try to understand what his wife needs, rather than being bitter toward her. He will not expect her to do heavy work since she is not as strong. And he will respect her as being of equal spiritual value with himself."
1 Peter 3:7 (NIV)
"A husband also shows love by expressing affection and fulfilling the wife's sexual needs."
1 Corinthians 7:3-5 (NIV)
"As the head of the family, a man should provide, not just for himself, but for his whole household."
1 Timothy 5:8 (NIV)