Are there any Christian denominations that believe in sex and marriage in the afterlife? After an interesting set of articles put forward in  the chatroom,  I'm curious to know if any christian denominations have said a marriage can continue in heaven, and if the conjugal act continues in heaven.

PS. I find the topic interesting but I am one of the Christians that believe marriage and sexual feelings vanish after death.
The LDS Church teaches that while not all marriages are eternal (see Luke 20:34-35), but that a marriage which is sealed is, and will continue in heaven. Additionally parents that are sealed to their children will still play a parental role in the afterlife.

As for what marriage will be like in the next life, we do not know, but some sources suggest that those in the celestial kingdom will be able to keep having children forever (if this process is the same or different is similarly up to speculation).