No Love Lost

No Love Lost is a mission in GTA IV. This is a mission given to Niko Bellic by Russian Mafia boss Mikhail Faustin; he asks Niko to dissuade his daughter's boyfriend from seeing her, and to kill him if he does not obey.

Walkthrough
Head over to Mikhail's house. You will see a long cutscene with Faustin. Drive over to the nearby building at the Firefly Island funfair where the couple are talking.

Anna's boyfriend will flee on a motorcycle; chase him on the PCJ-600 nearby and open fire. The game will instruct you in how to fire from a vehicle. Try to kill him before he meets up with his gang, to complete the mission early. If he does meet them, follow them offroad and take cover behind a tree. Use an Assault Rifle or SMG to take out all of the gang, preferably at range. Once they are eliminated, the mission is passed. This is an easy way to gain weapons, as the bikers drop them when they are killed, if you're fast enough to get them.

Trivia

 * Traffic during the chase is scripted (as in numerous other missions in the game), and as such, the vehicles seen are not random: a Declasse Taxi, a Cabby (unusual in Broker) and two parked Esperantos in Crockett Avenue, three Blista Compacts, two Primos, three Ferocis, a Declasse Taxi, a Premier and a Chavos on the Broker-Dukes Expressway; a Cabby, a Taxi, two Chavoses, and a Blista Compact (plus a Bobcat, a Feroci and two Vigeros parked) in Titulo Avenue; a Cabby and two Bobcats in Carson Street; a Taxi, a Blista Compact and a Feroci in Stilwater Avenue; a Blista Compact in Savannah Avenue; two Taxis, a Feroci, a Cabby and a parked Bobcat in Seymour Avenue; and another Cabby, with a parked Bobcat, Feroci and Vigero, in Parr Street.
 * Shooting at chase at funland next to Anna will cause to scream that Jason is nice and that she hates her father.