Soul Melding

Soul Melding occurs when two sorcerers sleep together. Though sex is not a requirement it tends to strengthen the effect. When two sorcerers sleep together either in direct contact or very close to each other their unconscious minds meld together, and it lets them interact in a kind of dream state watching each other's memories and looking into each other's minds. Though its somewhat random what memories present themselves at first the more two people soul meld and the more they bond as a couple the greater control and intimacy they have, and they can reach the point where they can pull memories from the other person as if they were from their own mind creating a connection far deeper than sexual intimacy or conventional romance.
There is also a Diamond spell that a sorcerer can perform to allow a minor form of soul melding with non-bloods where the couple can touch their foreheads together and hold hands allowing brief and minor soul melding and memory sharing. This is a minor effect however compared to conventional soul melding.