Sims play build 2 dating relationships
In fact, many romance games are Visual Novels, which is a much different game style.
(See for example, the difference between the series, which is very close to a Visual Novel style of gameplay, and the DOA Xtreme series, which is the closest thing to a true Dating Sim with mass-market appeal in the US.) If the game plays out like a Choose Your Own Adventure, that's a Visual Novel.
These dating sim elements are often referred to as Romance Sidequests in the RPG genre.
Here you will find a large collection of free sim dating games.
The Dating Sim is a type of game designed to set up goals, usually in the forms of schedules and stats corresponding to social skills, which must be achieved to discover a story focused entirely around the Character Development of the player's chosen girl/guy, get into his/her pants, or both.