Lovesexual

Lovesexual is a sexuality that changes depending on who someone is attracted to. This would usually be used if someone is only attracted to their partner(s) or their partner(s)'s gender. One who is lovesexual may have no gender preference or no attraction at all, until they have started a relationship with someone. For example, one could be aroace, but when asked out by someone they are close to who is a woman, they gain attraction towards women. This attraction may end once the relationship ends.

An easier way to describe it is that lovesexual people fall in love with people and not gender. It's somewhat like pansexual and demisexual, but slightly different.