should i be a little upset?

just for some context: i bought some concert tickets around november. the concert is saturday, may 25. my boyfriend agreed to go with me when i bought them and i told him all the info about it and also the date it was on. i’ve reminded him many times over the past couple months of when the concert was and i also reminded him again about a month ago just in case he forgot. so two days ago he tells me he’s going to texas to visit his brother and i asked him when and he said he didn’t know and that he would have to ask his parents. he didn’t even tell me if it was this week or in a couple weeks or whatever. he just told me he didn’t know. so i asked him again today and he told me thursday 😑. i called him and told him AGAIN that the concert was on saturday may 25 and he said he’d figure something out and text me and this is the conversation that followed:

update: i confronted him about calling me stupid and retarded and he said “Ok” and then i said “so you’re not even going to apologize for it? that’s so disrespectful that you’d call me that.” and he said “Sorry” lmao what? hmm?? that’s it? ok he can pay for his concert ticket because originally i was going to and we’ll go, but when she sings thank u, next i’m breaking up with him and leaving him in the middle of new orleans and he can find himself a ride home because it won’t be me. we both live 2 hours away from new orleans so he can have fun with that. i’ll enjoy myself at the concert and i’ll leave his ass at the end.. more fun for me 😌.

update 2: he finally apologized and he bought me some sunflowers and he wrote me a long note so idk what to do now.

update 3: we always call each other stupid and stuff as a joke and we laugh about it. but this is the first time he’s done it while arguing. so when i say he’s called me stupid and things like that before, he was kidding and we were just messing with each other. he’s never done it while arguing until this incident. not sure if it changes anything but i’m not completely sure what to do.

update 4: we’ve been together for almost 2 years now. i love him a lot. throughout the whole two years this is the first time he’s said that to me in a mean way. we always joke but this is the first time he’s done it while arguing when it’s not a joke. he’s apologized multiple times, written me notes, bought me flowers, and he surprised me with a date today. he says he feels really bad about it and wants to make up for it and that he’ll never do it again. i’m giving him a second chance but i told him if something like this ever happens again then i’m done. i’ll be gone. but he’s still paying for his concert ticket. he said that he’ll see his brother soon anyway since he’s moving back home in a few weeks and that he wants to go to the concert. but yea. he has one more chance before i’m gone and i let him know that.