Romance is an aspiration in The Sims 2. Romance Sims passionate to have as many romantic possibilities with anyone as possible, without being tied up by lifelong commitment. Romance Sims dare to have many lovers and cheat them without getting caught. They also want to make out and WooHoo with many Sims. If Nightlife is installed, they also want to go on date with their partners.
Though Romance Sims love to love, they don't want to bind a commitment with their lover, whether it's to go steady or get married.
Sims with knowledge aspiration get along pretty badly with romance sims, as they have nothing in common and where a romantic sim might wish for a style of life with a lot of partners and social interactions, intellectual sims prefer to stay alone studying. It's like cold-hot, water-oil. They won't ever get along well.
If you want a Romance Sim to marry and not have their aspiration bar fall low, make their secondary aspiration family. You need The Sims 2 FreeTime to get a secondary aspiration.
Romance Sims won't have a bad memory of marrying a rich Sim.
A relationship between Family Sims and Romance Sims may not always result too well due to their clashing needs. Family Sims want to get engaged and married, while Romance Sims normally fear engagement and marriage; as a result, an engagement/marriage between Romance and Family Sims will often greatly boost a Family Sim's aspiration while severely lowering the Romance Sim's. The Family Sim will want to have children and raise them carefully, and Romance Sims will wish to WooHoo, go on dates and find other lovers all the same time.
For these reasons, if you're looking to have a stable family, it's generally considered a poor strategy to have a Romance Sim marry. In order to keep their aspiration score high, they will effectively be required to cheat on their spouse.
When a Romance Sim falls in love with another Sim, they may also gain a want to have multiple loves at once.
Romance Sims are unique for not wanting to get married, engaged, go steady and have babies. Non-Romance Sims usually want things like this (besides Pleasure, but even they won't fear it).
Similar to Pleasure Sims, a handful of Romance Sims actually want marriage. This is extremely unusual, probably the rarest Want a Romance Sim can possibly roll.
In rare cases, if someone (even a family type) has many children and is annoyed with them and has a low aspiration bar for two days or more, they will get Romance type wants (i.e. kiss someone, go on a date, flirt etc).
If a Sim that has the Romance aspiration is married/joined to someone, and was created to be married/joined, the married/joined memory will be a good memory.
A Sim with this asipiration may want to be in love with more than one person at the same time, which implies cheating.
Despite fearing having babies, Romance sims will still have good memories from giving birth, and caring for their other wants can lighten the impact of such fears.