Is this childish?

So my male cousin just split with his girlfriend. I dont know why they broke up exactly. he's 25 and his ex girlfriend was 21 but I have been looking at her social media and every post she puts up on facebook are deep meaningful quotes about finding the right guy and how the right person will come into your life at the right time. She has put up like 5 posts about this and she has also made like 6 tiktok videos about the breakup and about being cheated on and about how she feels being single. Like she put up a video saying she is so happy being single with clesr sarcasm. I just think that it is a little over the top? They were together 8 months.
Is this childish?
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