There is scripture to support the fact that we will see our loved ones again, whether or not they were believers here on earth.
However, it takes a bit of putting 2 and 2 together from scripture to arrive at that conclusion. We know that the Book of Ezekiel, Chapter 40 to the end, takes place in the millenium... that 1000 year period that occurs before the Great White Thrown Judgement.
We are also shown in the Parable of Lazarus and the Rich Man from Luke 16 (KJV) that there is a divide, or Gulf, between the two sides of heaven. One side for the ignorant and unbelievers and one side for the believers and God's elect. That Gulf can not be crossed by those who were ignorant of Christ's teaching while here on earth OR by those who were aware, but chose not to follow Christ and accept Him. God's elect, the ones who DID accept Christ as their savior while on earth, CAN go across the Gulf in the millenium to teach the Truth to their father, mother, brother or unmarried sister, from Ezekiel 44 (KJV), on the other side, so they too, can know about Christ and choose to accept His message.
Therefore, if we can go to our father, mother, brother or unmarried sister to teach them the Message of Truth, we must be able to recognize them... and to speak with them and to know them.
[Note: Ezekiel 44:25 (KJV) - the word 'dead' in this application, as it takes place in the millenium, means 'spiritually dead'; an unrelated non believer.]