My ex and I "took a break" 2 years ago. We were going out for pretty much a year until he left me for another female. She soon turned into his girlfriend but he would ALWAYS tell me that he was single, and drop hints that he missed me and wanted to get back together. So around last year in October, his girlfriend (now ex) followed me on social media, but why? she doesn't know me, she's never meet me. I've recently seen her at a party (around April) and she literally followed me around everywhere! And they're not even together anymore. I just think it's super weird.