Get outta there now! u don't want a jealous wife forcing a fatal attraction situation on you

The mother "not appreciating" the boy's comment is the least bad outcome. If she really believed it, she'd have kicked you out of the house immediately, and maybe sent daddy with you.

What does pair mean?

Maybe the mother has been accusing the dad of having a relationship with you and the kid overheard?

for those of you like me an au pair is: a young foreign person, typically a woman, who helps with housework or child care in exchange for room and board.

Kids say the darnedest things!

What does au pair mean?

Since you didn't specify whether actually are or aren't his new sweetheart, I voted fyl and ydi.

Children that young tend to be not particularly good at using words correctly, or understanding implications of sexual nature...

Let us hope that the kid wasn't the maturest of the bunch. Who am I kidding, most kids are more mature than most adults these days.