终于明白，微信为啥只能“单删好友”

<p style="font-size:16px;color:#333333;line-height:30px;font-family:Helvetica,Arial,sans-serif;font-weight:normal;text-align:left;hyphens:auto" data-flag="normal" lang="en">“一个已经删除了对方，一个还恋恋不忘”的人，是你么？<br /><img data-key="0" src="http://image.xmcdn.com/group34/M06/82/EE/wKgJYFnvIEPhSp_nAAgLVgpRvfw750.jpg?op_type=4&device_type=ios&upload_type=attachment&name=mobile_large" alt="" data-origin="http://image.xmcdn.com/group34/M06/82/EE/wKgJYFnvIEPhSp_nAAgLVgpRvfw750.jpg?op_type=0" data-large="http://image.xmcdn.com/group34/M06/82/EE/wKgJYFnvIEPhSp_nAAgLVgpRvfw750.jpg?op_type=4&device_type=ios&upload_type=attachment&name=mobile_large" data-large-width="750" data-large-height="693" data-preview="http://image.xmcdn.com/group34/M06/82/EE/wKgJYFnvIEPhSp_nAAgLVgpRvfw750.jpg?op_type=4&device_type=ios&upload_type=attachment&name=mobile_small" data-preview-width="140" data-preview-height="129" /></p>