Do you think it's important for a Filipino couple to get married even though they have been living together for many years now and have three children?

For me, yes. I used to be ok with the idea of just living together and no more marriage. But when I got married, I realized how important it is for the family that you are building. It gave me a different sense of fulfillment and I finally felt that all the things we are doing as a couple are with God's blessings.