You are pratically a couple by now. - Raising a kid who is a sister to one of you. Check - Living together. Check - Have akward desires/moments with each other. Check and check - Acting like a couple in love for like, 10 years everyday. Big CHECK No reason not admitting it now.
You a couple?No problem...Erm...I'll take care of it, you can just put it over there.Ah! Okay!Oh? What's happening, you two?It's not like that!
It's not!Kaga-san...Thank you...Let's go and put the futons away, shall we, Zuikaku-chan?Okaaay!Thank you for the food.