My ex and I broke up about a year ago after a very short and messed up relationship. We barely ever saw each other, he was chronically unavailable to the point I would never see him, I cared a lot about him as I felt he was the one for me, but was continuously frustrated by his behaviour, and whenever I would complain, I would get attacked for smothering him or being insecure. I felt he really liked me, but clearly, there were problems even love couldn't fix. After I sent him a few nasty messages, he broke up with me, I think at least a part of him did it because he thought he couldn't cope with a relationship. Tragically, I knew how much he had liked me. After the break up, he hurt me some more by putting it on social networks, implying I was a horrible person. My heart was broken but eventually I moved on. And then I found out we would attend the same wedding as the best man and the maid of honour. Our friends know of our situation but still asked us to dance the first dance together. I was worried about seeing him again as we had been NC for almost a year, and then a few days ago he texted me out of the blew, super friendly and asked if maybe we could practice for our special dance together. I was confused by this dance as the bride hadn't told me anything about this. He was convinced there was a dance he and I were dancing by ourselves. Curious as I am, I said yes to meeting up with him. He texted me again the night before telling me he doesn't want to cause me trouble and if I am too nervous about seeing him, we wouldn't have to. Again, this is someone who publicly put me on blast a year ago. So we met at his friend's house while nobody was there but the two of us. This was one of the rare times he didn't actually postpone our arrangement . He was super friendly. We chatted for a while, as we used to, we had clicked the first time we met, all about the things that have happened to us. It was so easy talking to him, joking, like we were meeting for the first time. Then the comments started. I mentioned the dress for the wedding, and on a couple of occasions he told me he's sure I'd be a beautiful maid of honour. I then asked if he had booked a room in the hotel we are staying at for the wedding, he said he hadn't yet but wouldn't mind sharing the room with me. Then I told him I am concerned my dress will go up during all the dancing, to which he said he wouldn't mind that, in fact he would be fine with that. While we were dancing he kept staring into my eyes and I kept looking away as I was very confused. He offered to share a taxi but I just kind of rushed out of the house and left. He also implied he wants to dance with me a lot that evening. I am by no means saying I want to get back together with him, I cared so much about him and he broke my heart, but being around him brought some old memories back. I am scared though, this is someone who publicly put me down and claimed I had broken him. Now he is being flirty and super casual? Any advice? Thank you. L.