Chris Brown and Karrueche Tran are ''friends with benefits''.

The 'Fine China' singer is keeping his relationship with the model strictly casual following their break up earlier this year and sources insist the arrangement ''works''.

Chris and Karrueche were spotted kissing before leaving a party together on Friday (18.10.13) but friends say this doesn't mean they will reunite.

A source told ''I mean, they're friends with benefits and have been for a long time now. Yeah, they kiss but that's PG compared what they do behind closed doors.

''That's what they do and nobody should be surprised. They had a good time at the party. They left together and did what they did and that's it. He likes her but he's not about to be in a committed relationship with anybody.

''They both like s**t just the way it is. They're friends with benefits and it works.''

Chris - who had been dating Karrueche following a brief reunion with Rihanna in May - has been upfront about how their relationship should be to avoid any unnecessary drama.

The source continued: ''He's straightforward and honest with Karrueche, For years, he thought he always had to lie to females and sneak around. But a wise man told him if he's always honest, s**t always works out for the best and females respect that. Since he's been doing that, his life has been carefree.''