so I have a boyfriend and he's amazing and treats me well, but he's still talks to his ex girlfriend every single day (they live in the same area and get the train to our college together). i wouldn't be bothered about this, however, it's so obvious she still has feelings for him (tho she dumped him for no reason), and she still attempts to flirt with him in front of me. he is always on her snapchat story because they're doing something and I feel like I'm going crazy.