Tā jūrán bǎ wǒ qǔguān le, wǒmen míngmíng hùguān le sān nián.
He actually unfollowed me, even though we'd been mutuals for three years.
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usage
Abbreviation of 互相关注. Standard on Weibo, Xiaohongshu, Douyin. Related verbs: 关注 (to follow), 取关 (to unfollow), 粉 (to fan someone), 回关 (to follow back).