Found out what my (17f) dad has been doing, what do I do?
Sorry for the length of this,
So here is some background information about my parents relationship, they have been married for about 22 years now, and had my older brother a year into their marriage and me 6 years into their marriage.
Now, other than bickering and some major fights over which they haven't talked for weeks over, they've been a pretty normal couple.
Now here where it gets messy, about 2 and half years ago when I was using my dad's phone to study (I did not have a phone back then), I wanted to send my mum some information that's when I opened my dad's WhatsApp to find a chat with a woman's name on the top but with the chat empty.
I was smart enough to know that if a chat is in the top of ur recents and is empty, it definitely has been cleared off.
I got pretty suspicious, so I just watched out for something else.
Literally like in the next few days I saw my father text that woman in a f-ed up way. Realised he's cheating on my mom with this woman. And based on their chats it seemed like either they have history from way back or they have been going behind my mom's back for a **WHILE** now. (Mind you, she is ALSO married and has 2 kids)
And while all this is happening, me wracking my brain on trying to figure out what to do alone dealing with all this, my older brother is in college pretty far out.
And when me, my father and mum went out shopping once, GUESS WHO SHOWED UP! The woman my father was cheating on my mom with! AND HE INTRODUCED US TO HER. Bro that got my blood boiling.
GUESS WHAT.
a few weeks later she was at my HOME. Apparently she was looking for a house, And my father is the one who suggested OUR apartment. And she ended up finding a house and moving in as well with her husband and 2 kids.
Now the thing is like a year later I told my brother about the whole other woman thing and we did end up confronting our father, and bro immediately broke down and put this whole scene where he was like omg omg I'm so sorry I'll even quit my job I'll even move far away please please I'll stop talking to her I'll break it up whatever whatever, my brother believed him, but I didn't. Those ready flowing tears just struck me oddly. My father came to us the next day and said I talked to her (the other woman) and I ended it and all that bla bla
I didn't talk to him for weeks and a few months after that but I did end up talking again.
Now the thing is a few months ago, when my dad was working from home and went to pee, i just went into his room to get some tape when I saw his monitor open on THAT woman's chat. I was fucking pissed.
I knew this mf could not be trusted. I told my brother immediately and we decided this was our last straw and we have to tell our mum the truth.
So ideally we thought we would ask our dad to come clean when my brother would be home for his summer break which is from the start of june up until the end of July. And rn it's basically the 28th of July. And we still haven't done it.
What do I do?
Do we ask our dad to come clean?
Do we confront our dad and give him another chance?
Do we let it slide like idk? (I wouldn't count on this being an option)
Please help me out here.