BUR #5292 has been approved by @evazion.
create alias romance -> couple
romance has no wiki, and doesn't seem to capture anything that couple doesn't already capture. Most of the posts tagged have nothing especially romantic about them that couple wouldn't suffice for. It's rarely used, except for one user recently adding it to all his uploads of his favourite ship.
In any case, whether a given interaction or scene is romantic or not is subjective and would be better off as a pool if anything.