<human>: Provide a brief overview of the text.

My ex and I broke up 3 months ago after a really wonderful 3 year relationship- it broke my heart and I'm still struggling with it to be honest. I still thought we had a totally viable relationship, but he decided he was done. I don't agree with him, but I can get why he did what he did and I'm trying to move on, but I'm not there yet. 

While we were dating, about 9 months ago, he introduced me to this friend of his who he thought I would really mesh with because we were pretty similar etc. He was right. We ended up having a class together and got really close, and she actually ended up being one of my main emotional supports after he broke up with me, and the whole break up brought us even closer. 

So today, she tells me she thinks she has been developing some feelings for him lately, but she isnt really sure if its a passing crush or if they're real and she's trying to figure it out. And then she tells me that he asked her out a few days ago. She told him she had to think about it. 

I told her I just needed to process things, but that I had nothing against her, but I was kind of mad at him because he knows we're really close and that this is going to be kind of a shitfest whatever way it goes. She's talking to him today about it, mostly just to figure out if he's actually over it and moving on or just trying to use her as a rebound because of how similar we are in some respects. The friend in me doesn't want to get in the way of her trying to date someone she likes, but the ex in me is not at all over him and definitely not ok with this situation. I guess I'm just looking at some advice on how reddit thinks I should handle this.
<bot>: My now-ex introduced me to a friend of his, we became best friends, he broke my heart a few months later, now he asked her out... HALP