Well why'd you leave the beer out?!

Flies is flies. Fruit or beer. They will get into anything if you leave the door or windows open

Why not just throw out the fruit instead of arguing about it? Be less of a hassle if the fruit is dealt with before it rots.

How very unappealing, let's hope this rotten situation doesn't ferment any longer.

Flies are notorious alcoholics

Throw it out yourself and and stop leaving your beer around. And close your doors and windows, also make your bed, and clean your room, and do your homework, and tuck your shirt in, and nag nag nag.

Throw out the fruit and put a bowl of apple cider vinegar with a drop of dish soap. You'll be rid of them in no time! Also rinse your drains once or twice a day with very hot water... that's where they breed.

Eat her fruit before it rots, tell her you have no idea what happen, maybe she ate it and didn't remember. No need and letting good fruit go to waste.

to get rid of fruit flies get a bowl and put a large slice of apple in it. then cover the bowl with plastic wrap and poke small holes in it. that way the fruit flies can get in but they won't be able to find a way out.

You're both wrong to some degree, until you can both admit this you're doomed to fail.