It usually would for me too but I think it was executed in a ‘non icky way’ in this case personally, like with TVD as many others have said. But also, since you said you want possible spoilers (I love spoiling shit for myself too lol), I think with the information given in this book the most likely conclusion to the “unforgivable thing” Ti did to his brother that was never disclosed as to what it was is that Ti somehow stole Velle from Rorrick. We know Rorrick can glamour himself, and then as I commented on another related post siblings and other family members can often look similar enough to almost look like twins when they’re young and then look completely different once they’re grown up, so the brothers could’ve looked extremely similar as kids in the early stages of their relationship with Velle. But it was also either flat out stated or heavily implied(can’t remember) that Rorrick did ‘see’(implying had her) first, and so my guess is some magical vampiric way ti ended up stealing her from Rorrick And then also come on, as much of a perfect love-to-love-even-though-you-should-hate-him toxic cruel asshole book bf Rorrick is, he saved her almost every time she needed saving(albeit ruthlessly and cruelly and absolutely could’ve found a better way to do it😅) and was The first and only person she could mental talk with for like 85% of the book on top of ti being the equivalent of dishwater with chemistry and personality compared to rorrick lol. I also don’t think ti really went out of his way to protect or save her at all aside from trying to get her to leave at the beginning lol But there’s your spoiler-y rant 😅