<human>: So basically, we had been planning a trip to go to Los Angeles sometime in April and it was something I was really looking forward to. We were finally going to book the trip on March 1st because we had both been paid and HE wanted to book it that day. I spent that whole day trying to find good, but cheap hotels and flights and eventually did find some great deals. But, when he got home from work that night, he "wanted to look it up for himself to make sure this was the best deal." This was understandable to me, as I could wait another day to get this booked. But, the next day rolls by and he hasn't done any research or mentioned it at all. I decide to let it slide and allow him to come to me when he finds something. 

Well, apparently I let it slide for too long. He hadn't mentioned the trip at all until earlier this week, when he said to me:

"Hey, so change of plans for the trip. I'm going to go down to CA with my friend Rilee, we are gonna go there on April 7th and she's going to leave on the 10th. You can fly down on that day and we can just spend the next few days here together!"

This instantly infuriated me. I felt so... slighted. To me, this was a very selfish thing to do and I didn't agree to it for a second. I was mad and I let him know that it really hurt me that he was gonna do this, but he STILL doesn't care. Actually, yesterday he booked his flights with his friend and didn't tell me, I had actually found out from his twitter. I let him know AGAIN how upset it is making me that he is just dropping our trip for his friend, but he keeps saying that "You can still go, it's still our trip and I'm not doing anything wrong. I would've agreed to this if you wanted to do this." 

.....

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: I just feel so disappointed and the fact that he doesn't even think he's done anything wrong makes it worse. Am I the one who's wrong here or is he actually being extremely selfish?