Im disappointed in myself

I really am so disappointed with my self. I am a very selfish person. Here it goes. I took a whole week off both of my jobs so i can spend with my girls during spring break so we can do activities together. My boyfriend (their father) didn't take a day or a afternoon to join us, so i did not think any of it. Today he came home and told me he is taking his nephews (2boys and a girl) to FL to Disney. It hit me like a brick wall... i was like ok??? So how??when?? Huh?? Mind you its Friday we live in NC... He just left to pick them up and on their way... I was mad..I was feeling jelous of them... we had it plan that we were going with our girls. .. ..after me crying in the bathroom so my girls wont see me...i was like you have to be kidding me.. I shouldn't be jelous. .thise kids have been through alot and they deserve someone taking them and having fun.. i am so ashamed of my self for behaving in that manner. But i would of appreciated a notice instead of 20 minutes.