NaaaMilf
A NaaaMilf is a woman who starts dating a guy just to feel good, but then she ends it because she's too selfish to stick around.
You're nice, but I'm too selfish to stay. I'm out.
I like you, but I'm too busy with my life. See you later.
I'm with you now, but I'm gonna leave you later. I just don't want to be tied down.