There is no hard-and-fast rule but GENERALLY you should wait long enough to determine if there are common values, interests and character such that the relationship will last despite, or in addition, to the sex. Some people tell you that they had first date sex and were with their partner forever, for years, got married, etc. Some people will say hold out til marriage. All of these things are both right and wrong. There is no clock on when sex happens in a relationship that you can cite to make the r. There is no clock on when sex happens in a relationship that you can cite to make the relationship viable.

Ah, sex and dating. Dating and sex. Are there two words more complicated than this pair these days? Probably not. There was a time when sex rarely, if ever, preceded a marriage, let alone a relationship.

Subscriber Account active since. There are a lot of questions when you first begin dating someone, but one of the biggest is when exactly you should take the plunge and sleep together. This varied across genders, too. Don't stress if you don't get a kiss on the first date.

Subscriber Account active since. Valentine's Day is coming soon, signaling a romantic milestone for many couples. But for some new pairs, the worry that your relationship is moving too fast or too slow can become a major concern. Which got us wondering: When is the best time to start being sexually intimate in a relationship, according to science?