Facebook was against this idea sometime ago. However, a year ago, Mark Zuckerberg was caught doing it. There was a report which came sometime ago telling users that this service was caught scraping call logs and message data. As a matter of consequence, Facebook came under a lot of pressure as users started accusing it for the misuse of its power. Facebook then said that this was a feature that it was planning to incorporate soon in the messaging app. Now, Facebook released a statement regarding this.