In episode two, DI Luke Bascombe, played by Ashley Walters, learns that he completely misinterpreted a series of emojis left by Katie on Jamie's Instagram profile, believing they were flirtatious.

Which is to say, yeah, there’s a lot you can do with one of these ... But choosing the correct colour heart emoji in any given situation requires you to know the actual meaning of each.

Emojis have become a completely different language for younger people - so how can parents make sense of it all?

This article originally appeared on NorthJersey.com: What does the broken orange heart mean? Background on emoji's meaning ...

From coloured hearts to kidney beans, red pills and '100', here is what the emoji on your child's phone really mean - and what to do if you see ... Meanwhile, a blue heart is used less for romance ...