She also says the conversation, like the primping, should happen at the same time -- before that big date.
"Think about your sexual boundaries before you've had that first drink," Mc Clary advises.
"You might find that you don't even like the person," Allen tells Web MD.
Other experts agree that sex too-soon can lead to undesirable consequences.
Once you've decided what you want out of a date, say experts, you should make it part of your regular dating rules to tell your partner.
"If you just want a one-night stand, you owe it to your partner to tell them 'it's just sex I'm after,'" Mc Clary tells Web MD.
But overall, I have found that very often they want the same thing," Allen says.
Does the Bible teach that sex before marriage is a sin? This is because we live in a world of tweets and quick soundbites where people rarely have enough time for context.
According to the singles whom Allen has encountered, boomers generally play by far different dating rules than young, 20-something daters.
"I spoke with a young man in his early to mid-20s who told me that if he didn't have sex on the first or second night, he'd move on to the next person," she recalls.
In the wider biblical context, as we noted earlier, sexual immorality includes sex before marriage. A man was sleeping with his stepmom or mother-in-law outside of marriage.