So. I've been with my partner for about 18 months and have gained two step daughters (I have two girls of my own). My partner moved in with us January this year, ever since he's moved in with me, the mother of his children would cause problems such as: telling the children to say I've touched them wrong, stealing things I would let her children borrow such as mine and my daughters lunch boxes bags shoes etc, tried to get in between our relationship (telling me lies about my partner), one day we even had to call the police on her after she turned up at our home demanding her ddaughter despite it being dads set day. Anyway my eldest and her youngest are in the same class at school, over the last couple of months I have noticed her infiltrating my friendship groups and trying hard to make friends with my mum friends from school. It's been a bit upsetting but I've tried to ignore it and ignore the people that have been a bit two faced by being friendly with her, why would I want them as friends anyway? Now, what I have noticed in the last couple of weeks is that she has started dressing like me!!! She has completely changed her style and is wearing almost identical outfits that I wear!! Its really winding me up but I feel like I can't speak to anyone as I'll sound petty, does anyone think they know why she might be doing this? She isn't trying to be friends with me as I've given opportunities for that in the past and she still had to act up. Do you think she wants my partner back or what? She had multiple affairs which is why they broke up so I'm not sure, I just don't understand why she is copying my style it's so creepy. HELP what do I do I feel like she's obsessed with me tell me I'm wrong please