What Does the Symbol ({}) Mean?

[Blue]

I'm texting a girl at the moment and sometimes, somewhere in the message she will finish a sentence with ({}) randomly and i have no idea what that is? just a simple answer would be nice & thx a million in advance! P.S i think Facebookers might know what this is

[Max]

Its a vagina mate

[Max]

It's simply and vagina.

[Will]

its a vagina.
8==D --> --> ({})

[Micer]

on some phones like blackberry its a hug emoticon (happens to me) so when it gets sent to other phones that dont have the emoticon it'll be ({}) and sometimes it can be used as a vagina but might not be because its fairly out of context