TIFU By finding out my mum is cheating on my dad

So this is something that really shocked me. 2 years ago I was in the kitchen getting a snack when I saw my mums phone open with a random guy on Instagram saying romantic stuff.

I spoke to my auntie about it because it was all in Arabic and she told me it was nothing to worry about and it was probably nothing as they all speak like that.

Fast forward to 2 years later my mums phone is open again, so just to make sure I check the phone.

And to my surprise it’s the same guy. But this time there was no second guessing, she was calling him babe and talking dirty. She had also been deleting the history every time they texted (I took photos of all this).

This is really heartbreaking for me because it’s my mum and my poor dad recently lost his restaurant which he is now rebuilding due to an arson attack.

So at the moment my mum is the breadwinner and if I told my dad it would break him as he has no income at this time and I don’t know how it will effect him because he also has no driver’s license, his been going through it this past year and a bit.

I’m the only one in my family that knows and don’t know what to do it’s probably not smart asking strangers on the internet but here I am. Do I want a few months for my dad to get back on his feet then tell him? Do I talk to my family beforehand who I know will in a fit of anger talk to my mum straight away? I’m stumped guys I’m only 18 and in university and I’m just disappointed in my mum.

To clarify the guy lives in a different country and they most likely haven’t done anything but cant’t confirm because 2 years ago she was in his country, maybe that’s where they met? Anyway thanks for reading if you guys got any advice I’d love to hear it

TLDR: TIFU by finding my mum texting another guy and calling him babe, while my dad is out of a job and has had one of the worst years of his life and I’m the only one to know.