Ex Girlfriend Revealed She's Gay?

We dated for 4 years (age 22 to 26); she dumped me after I proposed and our parents met (they refused my ethnicity) and thoughout the years was very toxic and abusive, I don't want to get into too much detail but Im way happier without her...

My sister still follows her on social media and recently told me that my ex is gay now. she's dating a girl, cut her hair short, rainbows all over her pages etc.

I can't help but feel even more used now then before and it's troubling me. Why would she keep our relationship so long? Good for her for coming out, but I didn't gain anything from our relationship and feel like I missed out on 4 years of my life
Ex Girlfriend Revealed She's Gay?
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