Stacy has to be the life of the party. she has to be the center of attention, even with her married friends' husbands. this behavior has upset a number of her friends, especially when she monopolizes all conversation to focus on herself. stacy may be considered to have personality disorder

Stacy may be considered to have narcissistic personality disorder

Explanation:

This personality disorder is described as a group of signs and behaviors a person have, that express the need of attention, and is constantly trying to get it.

This is problematic because people with this disorder have difficuties stablishing relations with others, as they are not always able to understand other people's necessities. They are constantlly putting their wishes and needs before others, without furder considerations. This can lead to selfish conducts such as Stacey's.