Boyfriend's trip to europe?? without me?

he is doing a school abroad program in barcelona. he's in law school. this i am fine with. but, then for another three weeks, he's traveling to paris, prague, italy, and amsterdam. for as long as ive known him (10 years), we've planned to do things together. he's got all of my first times. i have none of his. the only conditions were leave paris and england out of it...well he's not going to england but is going to paris. he knew how important traveling together the first time was to me and it just didnt matter to him. ive tried over and over to get over this but i just cant. he's going to paris with a friend and that friend's gf. i speak french, study french literature. paris was special. but really all of it was supposed to be ours. i just dont know if i can get over this. theres nothing left that is just ours. and i seem to be the only one that it was important to. he's my best friend and my boyfriend, why is it that im not good enough to go with? i know it sounds harsh, but i just feel like traveling is ruined for us. i just dont want to go with him if its not important to him. i'm supposed to be the love of his life? i dont think so. and for that matter, i trust him whole heartedly. he would never in a million years betray my trust...but i swear, all he does is go out drinking. thats it. i feel like because he didnt have as good a social life in college, that now that is all he cares about...how many facebook friends, or how active his social calendar is....thats just way more important than me?