Another form of "heart".
This one implies that there is no love; and is a basic image of a heart with an "X" through it. As if the person wants nothing more to do with what the world calls love at the moment.
person1: i love you..
person2: ....... im sorry..
person1: </3....... :(
person2: i dont want to hurt you.. i just dont want to get involved with all that again.. not right now at least. <X3
A form of internet heart. Whilst </3 means brokenheart, <X3 means fixed heart.
John: Omg, you whore :P
Leah: =O <////3 *fake pain*
John: I am sorry.
Leah: NOT TALKING TO YOU!!
John: ='( <333 SORRY, I love you.