A younger brother of mine saw a message on his finances phone.
She sent a message to a guy on instagram, telling him she likes his lips, so tempting.
Now shes claiming its not a big deal, that she doesn't even know the guy, that hes just an instagram model...(its true she doesnt know him,and have never met him).
But my brother doesnt feel good about it, he asked for my advice, and i decided to put it here for him to see himself.

Pls is this a red flag... Or not much of a big deal. The wedding is in February.