Right? Sister ruining his (albeit crappy) relationship and Brother screwing his GF. But in the end, the sister actually did him a favor!

Technically, his sister did him a favor.

His sister might have known, or at least had a suspicion of what was going on with the brother and the girlfriend but was worried that OP wouldn't believe her if she told him, a friend of mine did something very similar for his best friend. If so this was an ingenious way of doing it without having to be the person to deliver such shitty news or risk looking like you're trying to interfere.

Plot twist!

Clever or unintentional?

And then thank your sister.

Is your point meant to be whether he admits or denies it, it proves he's guilty? Maybe that's why he isn't giving an answer. Because he knows if he denies it, he won't be believed anyway.

I think they were going with more of a hesitation thing. like, if he was truly innocent he would've had no problem denying it in the first place

56 It's the fact that he refuses to give any answer at all. If he was innocent, why would he have a problem with answering straight away? It's sketchy.

Dont make it sound like all siblings are like that. I have 2 older sisters and near would do anything likethat

I did not intend to make it seem that way at all. In fact, that is why I specified that I only felt that way when situations such as the FML arise.

I completely agree #5, but I've still had a similar situation with an ex and someone used to be a really close friend of mine so being siblingless doesn't shield you completely from people close to you being pieces of shit sometimes.

think she might have done it on purpose?

The sister sent the text. Not him.

It was OP's sister who sent the text, not him.

Your stupid

You're stupid.

I wonder if she knew the brother was banging his gf.