What Did Jesus Say About Marriage?

One of the arguments I read over and over about the marriage debate is that Jesus never said anything against homosexual marriage, so it must be right. The problem with this logic is that Jesus does speak of heterosexual marriage in Matthew 19:1-10. In these verses, the Pharisees ask a question to which they already know the answer. They want to know if it is legal and right for a man to divorce his wife for any reason. In verses 4 and 5 Jesus references the Genesis account of marriage as being between a male and female, and that the male and female, when joined together, leave their families to start their own families. Jesus does not reference homosexual marriage in these verses, because marriage was and is between a man and a woman. Jesus is very plain in these verses as to the definition of marriage. Jesus' reference to heterosexual marriage as being defined by God is a reference to homosexual marriage being outside of God's word.
The problem that we face today, is we have destroyed and distorted marriage between a man and a woman. So that even standing on the principles of the bible are hard for us because of actions. Very few people save themselves for marriage any longer. People move through marriages like revolving door at a hotel. Even in the the Old Testament, the parameters of marriage between one man and one woman were not followed. I've even heard Christian people explain this away with, "it was the custom of the day." This is a very dangerous argument for this issue. If we are going with the custom of the day, homosexual marriage will more than likely be legalized in America. When it is, is that the custom of the day?
The principle to stand on is God's word.