I might sound unreasonable here, but me and the ex split a year ago..long story but felt he kept me on a string for nearly 9 months after.
Anyway he has a gf now, who he's been seeing about 5 months, anyway I'm finding it really hard, we were together for 15 years and he's the father to my two DC's, he takes the kids to hers and on days out which I'm fine with, the less information I know the better at the moment.
Anyway, I feel like some of the things he says he's either really dumb or rubbing it in.
Example 1: He came to see the kids and asked if we could talk, said he felt really low and went into self-destruct mode, he didn't divulge how and I didn't ask, but he then said and I think me and her might be splitting up. Obviously this didn't happen, so in my crazy head I'm think oh he must have declared his love for her, so felt quite low. Told him he shouldn't be bringing up issues about him and his gf, talk to someone else.
Example 2: he picked the kids up and he'd parked a little down the street but she was in the van, I said could you have not picked the kids up on their own, he said he parked further out of respect for me, I said it's not respect (possibly being unreasonable here) but when he left I sobbed my heart out. He did it again the week later, and I did have another little cry.
Example 3: he picks the kids up a couple of weeks later and parks right outside and she is in the van, she kept her head down, but it knocked me for 6 and I said why would you park right outside, and he said well you weren't happy that I parked down the street. (Again possibly being unreasonable)
Example 4: he asks if he can take the kids abroad, I said it was fine, but he then adds, I'm only asking you because I'm taking them out to a lot of new places and they might prefer being with me as we do fun stuff! So I said are you implying that I don't do fun things with the kids? He said he didn't mean it that way.
Example 5: he rings me and says, what's resus, so I told him what it was and then, proceeds to says something about being at the hospital as his gf mum is in there, so I'm a bit taken back and say, you've decided to ring me and ask me, out of all the people he could ask, you chose me. He said I work in the hospital, so I proceed to say, so does your mum and one of your friends. I asked if he tried to ask them and he said no. I am sure I am being unreasonable here as it is sad that her mum was there, however everytime I feel like I'm getting better with my life, things like this knock me back, and it is so hard especially when you still love them a lot 
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I spoke to him again! and aired my views and he seemed to agree and apologise. I realise this is his life now and I know I'll be happy one day, but I have no intention to meet his gf, even though she seems nice, from what my son has said, but that part of his life is none of my business and I trust him completely with our children.
I'm just feeling sad at the moment and thought it needed some friendly advice, others experience or a kick up the bum 