Aliquaromantic is an aro-spec identity in which one only feels romantic attraction under certain circumstances. Aliquaromantic can be considered an umbrella term, in which identities such as demiromantic are included under it.
For demiromantics the "certain circumstances" under which they feel attraction is when they have known the other individual for a certain amount of time. However, aliquaromantic can also be an identity on its own. For example, some individuals may only feel attraction to a very specific type of individual, or only when in a certain place or at a certain time.
The sexual counterpart to aliquaromantic is aliquasexual.