clean the pool 3 times on 3 different days, you can find the mope and bucket in the garage, open up the backpack/inventory, click on the mope and bucket to have it selected, close out of your backpack/inventory and at the pool you will see where you have to place it, then just click on the mope and bucket beside the pool to start cleaning, after you clean the pool, go inside and talk to aunt, tell her your done, next day or later on, you will find her in the pool, talk to her, i think the next day when you enter the house, you will get a bathroom scene, at night, go to aunt's house, there will be a new option to climb up the side of the house, peek in the window, get a scene, next night, do the same, get a different scene, next day, i went in the morning, you will see both in the pool, go inside, go to the office, get there house key, it will be on the left side on the self, go outside, talk to both, go inside to the fridge get yourself a beer, go back to the pool to finish the scene with both of them, next day, i went morning again, go into aunt's house and go into the kitchen and get a scene, at night, climb the house of the house again, this time you will get invited in, watch the scene, next day go to the pool, talk to aunt's wife, she will send you to the bathroom, watch scene, that night, go back, get a scene, next night go back get a new scene
and i think that's the whole story line for them 2, i don't think i left anything out, but at nights now, since you have there key, you can go into there room while they are sleeping and do stuff to them