Modern dating for young women is situation-ships and FWB's while they date for something serious.

FWB's for women is akin to porn for men, it's a temporary fix that impairs necessary deficiencies. It's like talking a bunch of anti-inflammatory pills instead of fixing an injury.

Often the FWB is someone they would spend a lot of time with and invest resources into so any other new relationship pales in comparison. The sex will be better, she will feel more comfortable with him and they've already built a rapport.