<human>: Give me the gist of the text in a nutshell

I was with my ex for a year. Throughout the relationship I constantly worked on improving every aspect of my life because I didn't feel like I measured up, whilst she essentially became completely dependant on me. She started ignoring her friends, became moody towards her family stopped going to the gym etc. In the last few weeks of the relationship one of her few remaining friends introduced her to tarot and that's where our relationship took a nosedive -- up until then I hadn't noticed a change in her, I ignored my friends warnings and I genuinely thought we were happy. After refusing to let my life be ruled by pieces of paper that I wasn't even allowed to touch she dumped me and complete idiot that I was I came back every time she wanted a shred of attention. Now, I don't want to go back to her when she feels like it, how can I tell her without making myself seem like a douche and losing all of our mutual friends?
<bot>: Ex dumped me because magic cards told her to, finally grown a backbone but want to be as grown-up as I can manage.