Is Rob Kardashian dating Chris Brown's ex-girlfriend?

The 28-year-old posted a pic of the rapper's ex-girlfriend Karrueche Tran that suggests that they're pretty close. The photo is a screenshot of his text messages and it appears that the 27-year-old sent him a picture of herself.

RELATED: Karrueche Tran Looks Unrecognizable With New Hair Style

Rob captioned the Instagram pic, which he soon deleted, "I like when she send me pictures."

karrueche tran and rob kardashian

Karrueche Tran and Rob Kardashian.

It's unclear whether they're dating or just close friends – only time will tell!

Click through the gallery to see more photos celebs posted and them immediately deleted.