Halloween Party Dilemma 101

Okay so my boyfriend has invited me to a Halloween party, and I'd love to go. It would be my first Halloween party to attend and I'd hate to pass this shit up. Only problemo? My parents. I'm 20 years old, living at home with my parents and although they seem to be a bit... More open about me staying out late, I don't wanna push the bar just a little bit too far. A party? With people they don't even know? Let alone going with a guy? I might as well forget it but I don't want to. I have never done anything exciting for Halloween even though it's my favorite holiday (💀). Anyway, idk how to bring it up to them without them going batshit crazy. The worst thing they could do is say no right? I don't want them to say no 😂 they don't even know my boyfriend exists... Why? We're black and they are.... What you could say uh... Unaccepting. I could say I'm going out with friends but I don't have those... Cuz I'm weird.

Help ya girl out 😅