Karrueche to Christina Milian: I'm Not Into You ... I Swear!!!

Christina Milian and Karrueche Tran got way more than they bargained for Tuesday when they said goodbye.

We've all been there ... you awkwardly lean in for a hug when the other person has the same idea but at a different angle ... and suddenly it looks like 'OITNB.'

Doesn't seem they mind much ... and we're pretty sure lots of dudes don't mind either.