Handoff/Picking up of D

Well my baby is home and I am so happy. She seems like she had a really great trip (although she only pooped one time while she was there -wth).
So the hand off went business only. He asked when I am moving into my new place, we talked about a few practical things related to D and then I was off-and he off to catch a flight home.
On the way home I just let D talk about her trip. I was happy to hear she had a good time but it was really hard for me to hear about him and gf and basically them all hanging out as a family, camping etc. (I know this comes with the teritory of divorce and co parenting, but only a month or so ago he was trying to convince me to come back and telling me these people were his pseudo family).
So, when I got home and put the kids to bed I got kinda sad. I had to text him to ask where her paperwork was (ss card, etc, couldnt find it in suitcase). He texted me back the info and then I slipped up and texted "D says that you are getting married ?" (his gf daughter told d this). He just texted back and said "hopefully someday"-OMG ouch this hurt so much. It is cold and really unkind and I guess thats what I get for breaking NC and having innapprpriate conversation with him but damn does he have to be so non empathetic to me? He may have meant it in just general terms but I am sensing he said it either in indifference or to pour salt in the wound.
I allowed all of this to put me in a sad state tonight. I feel like I cant even get a date and it has been so long since him and I were together. I understand the lessons here and what I have to build upon to even eventually be ready for another HEALTHy relationship( as in establish my own happiness first), but it just feels like it is so easy for him to meet someone and move on and I have only had a few dates. I dont NEED a relationship, but yes I do want one at some point and it just seems impossible. where I live, etc. Why are some things so easy for Narcs?? I realize perhaps that he may have not had the same growth or evolving with life experiences, as he is a narc, but it really seems he jumps in shit and comes out smelling like roses....and then there is me, still trying to let go of nothing more than an illusion.
Im just gonna feel these feelings tonite and I know clarity will come with sleep.