Is it weird to say «споки ноки»?

I started messaging someone new yesterday, and when he said goodnight I responded with споки ноки because that’s how I’d usually respond (to my friend who I’ve known for like two years, and is also a girl) and now I feel really embarrassed because that was probably a very odd thing to say 🥲 He said it back, but I was just wondering if that was really weird of me, if I should like apologise or just not do it again etc 😅

edit: thanks for the replies, it turned out fine and we did karaoke together and sang группа крови lol