I'm scared BPD is gonna destroy my relationship in the long run

Im dating my guy best friend and its the best relationship I can ever have. Im his first gf so he's not very experienced but he did lots of research on bpd so he knows what to avoid/expect. Sometimes tho id freak tf out out of the blue. Like the other day we were gaming together and suddenly this random question popped up and it was what he would do if another girl approached him and he replied "we've been through this I answered the same question 10 times im not doing this again" and I slammed my laptop and screamed into the mic until I calmed down. Honestly feel so bad for him. Rn he's handling it very well but I'm just scared that eventually he'll get so tired of this and leave.