Let's allow Jesus to answer this question: Some of the Sadducees came to Christ asking Him about the resurrection of the dead and if we will be married in heaven.  The answer He gave in Mark 12:24-25 is very interesting: "And Jesus answering said unto them, Do ye not therefore err, because ye know not the scriptures, neither the power of God? For when they shall rise from the dead, they neither marry, nor are given in marriage; but are as the angels which are in heaven."  (Compare this with Matthew 22:29-30, Luke 20:34-36)