This is the intertwined female and male symbols over a brain, representing a heterosexual relationship based on intelligence (Userbox: "This user is sapioheterosexual and as such is attracted to intelligence in the opposite gender").
(I plan to upload Sapiohomosexuality for both female-female and male-male relationships soon, as well as Sapiosexuality with no gender ties, as soon as I get around to making them)
This vector image includes elements that have been taken or adapted from this file:
Minime12358 (Asa Kaplan) modifying work of AnonMoos and Hugh Ghiney