It's not wrong for guys to be friends with girls but not to the extent that you will take a picture with this "friend" with your bodies close. I mean Guys, what will your girlfriend think? You're lucky if your girlfriend is really really reeeeeeaaallyyy UNDERSTANDING and has 10,000 buckets of patience.
For a girl, to see your boyfriend getting cozy with another girl is like a slap on the face with flaming rings on each finger. I know it's kinda over reacting but that is exactly how it feels like for a girl.
Guys, Imagine this, you saw a picture of your girlfriend getting touchy-touchy feely-feely with another guy and when you asked her who that is, She just says "That's just my friend. It's nothing.". How does that feel? I bet you're rolling you're eyes right now as if you don't agree to my point but deep inside, you know it sucks.
Girls love to be love, to be in love, and simply "LOVE". What if one day, All of the girls in the world just stopped loving? What if all the girls in the world just do things like Flirt, Sex and forget about you the next day? What If girls just stopped showing and sharing love? what will you guys do? Think.