After disclosing her true identity, it is revealed that Karen is a smoker.
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.Michelle is a character in the HD Universe and Niko Bellic's first girlfriend in Grand Theft Auto IV.He is introduced to her during the mission "Three's a Crowd" by Mallorie Bardas, who urges the two of them to date, due to Niko having just arrived in the city and not knowing anybody. Mallorie sets the both of them up and they decide to begin dating.You can normally go for some action afterwards if your score with the girl is higher than 80% (check your stats when parked in car outside your girlfriend's house).
Any special ability gained through dating is only available to use one time per game day.
Niko's first encounter with Karen (then known as Michelle) is during the mission "Three's a Crowd" where Niko has to pick her and Mallorie up from the subway station and take them back to Karen's apartment in Rotterdam Hill.
During the car ride, Mallorie suggests that she and Niko go out.
Each friend (and three of the girlfriends) provide special unlockable abilities in return for maintaining good relationships with them.
There are five friends in total, which become available at different times during the storyline.
Call your friend and perform activities with him on a regular basis to increase your 'like stat'.