If love can bloom on the battlefield, then by God, it can bloom anywhere it damn well pleases.
Regardless of race, creed, species, plane of existence, or definition of "alive," your perfect match is waiting for you somewhere in the great cosmos.
Alternatively, Virtual Life games with dating that are actually good for the DS (no RPGs): The Sims 2 (no subtitles).
Includes the possibility of getting a girlfriend/boyfriend and there are some social engineering aspects to it like spreading rumours about ppl, helping/ruining other ppl relationships and you can even cheat.
Protip: abuse internal DS clock manipulation or this game will force you to log in every day.
Great game overall and like most The Sims games, includes interactions like dancing, kissing and stuff (it's an interaction mini-game).
Avoid the DS versions of Pets and Sims 3 like the plague.
The most common objective of dating sims is to date, usually choosing from among several characters, and to achieve a romantic relationship.