Sacha: The reverse Porscha (spoilers)
In Porscha, we had someone presenting as a good person by putting her faith front and centre from the start. Then she was just immediately awful, we all saw through her act, then she went and kissed another groom when they were out as a group. Terence dropped her in quite hilarious fashion, and that was that.
In Sacha, we saw who we thought was a sweet, thoughtful, kind person paired with a Deaf person in Ross whom she went out of her way to be accommodating towards, and then for those who looked outside the timeline of the experiment and saw that she and Ross were no longer together, we were left perplexed as to why.
Probably not entirely coincidentally, Sacha in her public-facing persona has become a devout Christian who's always talking about her faith and belief and how that can get her through any challenge. This was something she picked up after MAFS, as oddly, looking at her old social media posts, she was into Wicca, Tarot, etc. prior to this.
But now, having seen her absolutely horrendous letter and behaviour last night, coupled with some other red flags over the past few weeks, it all makes sense why Ross would have called time on their relationship once filming wrapped and found someone else.
Two horrible people, just with a reversed/mixed sequence of how they fronted themselves to the world, but in the end, easy for anybody to see right through all of it.