So, you have a great girlfriend. Excellent! She's smart, she's beautiful, you love her family, and you get along really well with all of her friends. Well... except for that one guy, who's always kind of giving you the stink eye, and with whom she texts back and forth every night right up until bed. Yeah, the one who all but ignores you any time you're all hanging out. You've asked her about him multiple times, but you're always met with the same response:
"[Insert name here]? He's like my brother!"
If a girl ever hits you with this line, or a variation thereof, you should definitely, 100%, without a single doubt in the world, WORRY.
There’s a difference between a significant other having friends of different genders (which is perfectly fine, and definitely encouraged), and that same significant other having someone to whom they confide more than you, laugh with more than you, trust more than you -- and may or may not want to sleep with more than you. So men, when you hear this phrase? It's a red flag. Let me explain.