Why you no tell me?

I was just wondering that when people asked you,"Eh, you didn't tell me you got a bf dy."
Hmm well,I just thought that it's a bit weird to tell your friend " Eh, I have a bf dy" out of the blue, like where should I insert this sentence in a conversation?
Friend: "Hi Lisa, what you up to today?"
Me: "Oh well,it's a busy day for me. I still have one lab after this ><. What bout you?"
Friend: "Yeah, kinda same. Another tute after this."
Me: "Oh ya, I've got a bf dy :D"
---Hahaha, don't you find this awkward? It's like SOO random, don't you think so? But ya, maybe this situation is applicable to those close friends cause to your best best buddies,you'd better tell them ASAP or else you might get some *&^%$%%&***%$^---
Buddy: "Eh, apa lu doing?"
Me: "I got bf liao"
Buddy: "OMGGGG tell me who's the unlucky guy?!"
.....Okay I know this is an abrupt stop but I'm still rushing for assignments!....
Anyway good luck and all the bestest best for finals!
xoxo