At that time, 22% of heterosexual couples reported meeting online.

It may be because expectations are inflated and idealized in the absence of more actual information about the other person: in fact, the effect is lower when there is greater communication and disclosure.

The study authors note: "Online dating is another setting where certain elements of people’s personalities, behaviors, and even physical appearances may be obfuscated at first, leading to positive illusions that are not always sustainable over time." The same effect has also been seen in marriage, where not all newlyweds maintain satisfaction after the honeymoon phase.

Online dating doesn't work really well for young men (18-23).

In that age group, guys exponentially outnumber the girls, who are rather shallow and very fickle.

The more someone knew—the better and the more they had asked about the other person ("information seeking")—the more likely the first date was to be successful, presumably because doing so reduced uncertainty.

It appears that, in general, people who ask more before the first date have a better experience than those who wait until they meet to find out important information, possibly because they are less likely to be disillusioned.Further research is required to see if and when this more-is-better finding carries out over the long run.Likewise, there was no point at which having less uncertainty about the other person became a negative.They surveyed 186 participants who were using online dating, and had at least one person they were thinking of meeting in person.Of that first group, 94 participants had a first date, and completed the full survey, which included measures drawn from the literature on relationships and online dating. In addition, they collected the emails study participants sent prior to meeting and carefully coded the content into thematic units.Importantly, all other factors being equal, greater communication overall, and greater disclosure, predicted first date success.