A period of a relationship where two people tend to hang out together and talk constantly to each other, sometimes even ignoring their other friends. Symptoms of friend-lust include:

- Wanting to spend time with the person constantly and having a strange craving to see said person at random periods of the day

- Talking with the person constantly, whether it be through texts, IM's, and in-person communication (e-mails do not count)

- Experiencing jealousy when the person talks about their best friends

- Making up numerous inside-jokes and/or nicknames in one sitting, when you know you two probably won't remember them the next day

- And in extreme cases, day dreams about having freaky friends-with-benefits sex with said person.

The symptoms continue until the relationship dies down into best-friendliness or fizzles out because the person is getting too goddamn annoying.