Awww how cute LOL?

I know what you mean threw that kind of bonding, my 2 budgies Rainbow and Jasper can be very weird, one minute Rainbow is preening and snuggling towards him but when it comes to food she'll attack him the little pig she is lol. Just give them time, I'm sure when those moods hit they'll be super bonded. An egg already should be a good thing I geuss if there mating already haha.