Ex girlfriend playing mind games?

Back story: Dated 4.5 years broke up 5months ago its was her doing. I unfollowed her on all social media except Snapchat she views all my snap stories I never view hers. Anyway my two recent insta pics she liked let it sit for a hour then unliked them, the most recent one she liked and unliked then unfollowed me, then next day I get a request to follow me back on insta! Any idea what the purpose of this could be? I’m assuming it’s probably for attention or something but it’s gotta in my head need answers!
3 mo
by the way we’ve been NC for several months now
Ex girlfriend playing mind games?
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