Surreptitiousromantic is a term for people who don't share their romantic orientation due to it feeling very personal to them. They may feel their feelings are so important and private that they don't want to share them, or they may not know how to properly share their romantic feelings/orientation and therefore feel much more comfortable not doing so. It is not itself a romantic orientation and is therefore not inherently aro-spec or LGBTQ+, as these feelings aren't exclusive to aro-spec people.
History
This term was coined on February 22, 2021 by FANDOM user Guns Før Hands.