Reciprosexual or recipsexual is a sexual orientation on the asexual spectrum meaning someone who does not experience sexual attraction unless they know that the other individual is sexually attracted to them first.
Reciprosexual can be a sexual orientation on its own or can be combined with other orientations. For example, one could be reciprosexual and Straight, meaning that when one does experience sexual attraction it's exclusively towards individuals of the "opposite" gender.
The romantic counterpart of reciprosexual is reciproromantic.
The prefix recipro- comes from the word reciprocate or reciprocal.
The pink at the top of the flag stands for attraction. The white means lack of attraction. The black stands for asexuality.