Relatiosexual refers to someone who is sexually attracted to individuals who are already in a relationship. A relatiosexual individual does not have to be attracted to each partner equally. For example, a relatiosexual individual may be attracted to one person in a relationship 40% and the other 60%. The genders which a relatiosexual individual is attracted to are not specified.
This term is most commonly used by non-monogamous individuals, since they may find partners who are already in a relationship to be easier to be attracted to,.
Flag
The flag had originally only had three stripes, blue for love, green for nature, and white for togetherness. But it was later changed due to similarities to the flag of Sierra Leone. The original was created by an anonymous tumblr user in 2015 on a later deleted blog. The new one was made by an anonymous twitter user in 2017 and has the same colors with the same meaning.
Etymology
The term relatiosexual appeared in mid 2012 and became popular in early 2013. The term "relatio" is taken directly from relationship and implies an attraction to relationships.