What is this icon on the iphone Snapchat (trying to prove GF is cheating)

I'm on android and don't see that symbol even if I have an unread message. Could ask a friend that has an iphone if you're still interested.
 
So I googled Blue Arrow Snapchat and it says "If you go into the Stories list, then tap and hold on someone's name, a new option appears. Tap the blue arrow on the right, and you can send the account to other people. They'll receive it as a private Chat message. "
 
She's probably arranging a special secret surprise for her BF, now he's going to ruin it by accusing her of cheating. Then she's gonna cheat anyway to teach him a lesson.
 
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