There are two females in the game you must date—Mallorie's 'friend' Michelle and the O'Reary boys' sister Kate—but other than that, dating is completely optional.
However, there's a lot of fun to be had by partaking in the Liberty City singles scene.
If it went well, then you can expect another date, but even girls subjected to really bad dates can be salvaged. Wait a few in-game days at the very least before you call a girl for another date, and be sure to keep an eye on your relationship meters to see how much a girl does or doesn't like you.
This is the best gauge to see how well you're doing with any girl.
The relationship aspect of Grand Theft Auto IV is perhaps one of the most nebulous areas of this epic game.
However, that shouldn't daunt you from building as many relationships as you can, because they happen to provide some of the deeper and more rewarding experiences Grand Theft Auto IV has to offer.
There are two different kinds of primary relationships in the game.
Usually, from the point of cellular contact, you're going to have an in-game hour to get to your date before she gets miffed for standing her up.
The date can still go on to a certain point even if you're late, but it's definitely not the way you want to get things started.
At its greatest extent in the mid-11th century, it stretched from the Baltic Sea in the north to the Black Sea in the south and from the headwaters of the Vistula in the west to the Taman Peninsula in the east, According to Russian historiography the first ruler to start uniting East Slavic lands into what has become known as Kievan Rus' was Prince Oleg (882–912).
He extended his control from Novgorod south along the Dnieper river valley to protect trade from Khazar incursions from the east, and he moved his capital to the more strategic Kiev.