The older I get, the more I notice a lot of couples aren't based around purely love, or purely attraction, but rather circled around the fear of being alone. You'll see these girls (and even guys) who always are in a relationship doesn't matter if it ends, they'll have a new partner around the clock, lined up and ready to go .... Look at Taylor Swift, I am a Swiftie but she seems to monkey branch relationship to relationship without any time to heal or rest and you could probably pick out that she fears being alone. Some girls have such a hard time finding relationships too but the ones that fear being alone (or guys), have a bunch but obviously they are not dating high standards because they are just well... Settling.

Celebs aside, it happens on a day to basis too.

Personally I am someone who is really picky and I'm OK with being alone, and can't settle for someone if they don't check my boxes, and if I'm alone, then whatever.