A small town called Prosperity: To Tell Or Not To Tell

I'm faced with a terrible dilemma. Do I break my father's heart, or do I let him live a lie?

This is all about my mother, you see. She's going through some sort of midlife crisis, I guess. She dyes her hair to cover up the grey, wears her work clothes all the time, as if to remind everybody that she's still young enough to have a successful career. That wouldn't matter, though, if it weren't for the rest.

She's having affairs on the side.

I know she's a romance sim, but I always believed she was faithful to my dad. They had such a great relationship. In fact, with all us kids running around the house, I don't see how she could possible have found a chance to carry on an affair in secret. But now...

Not long after the birth of our son, Neil, Maeve went into town to buy him some toys and stuff. She came home looking shell shocked, and told me she'd seen Carol - that's my mom - with some young guy, flirting and making out. Then they disappeared into a clothing booth together! Maeve couldn't stand to watch, so she hurried out of there as soon as she could, but it was clear enough what they were doing in there.

I was horrified, of course. Who wouldn't be. But I needed to be sure, so - and I'm not proud of this - I found my mother's diary and looked through it. She had written quite a bit about that guy Brandon she works with; apparently she's been sleeping with him, too. When I confronted her, she told me it was none of my business. She didn't even try to deny it! She said she'd spent her life trying to be something she's not, and now she was making up for it.

Where does that leave my dad?!?!

He seems so happy with her. If I told him the truth... I don't want to think about what that would do to him. He loves her so much. And she says she isn't going to leave him; she says if Maeve and I just keep our mouths shut, nothing has to change.

Well, one thing has changed already, and that's our relationship. I can't even stand to look at her. The other night, while dad was at work, she invited the sim who delivers our groceries to stay and have a dip in the hot tub... I went upstairs as quickly as I could, so I wouldn't have to see her put the moves on him. But apparently Grandpa's ghost showed up and scared her, so she put it off for another time, I guess.

I just don't know what to do. There's no good solution here, is there? Either I keep quiet, becoming my mother's accomplice in her cheating, or I tell the truth, and break my dad's heart. Is preserving the peace a good enough reason to live a lie? I tried to talk to Maeve about it, but she says she doesn't have any answers for me.

What's a sim to do?