Woah, this could have been my post. My boyfriend had a work thing the same exact thing happened. I wish I had an answer for you, sometimes I think I overreact or over think things. But I feel EXACTLY the same way as you. When I asked him about it after the fact he said I could have looked it up and came. But he never said he wanted me to come before, he gave me the impression he did not want me to go. "I don't know all the details, location, Its not like I will be able to hang out"
I don't know if anything i'm saying even has a point right now, I guess my point is,
It can be confusing (men/relationships), but maybe we are looking at it the wrong way? Maybe they just dont see things the same way we do? Just because they dont act the way we think they should may not mean they dont love and care about us?
I wish I had more of an answer for you,
I wish you the all the best.