Yes, well, Arran being in love with Cariad hadn't necessarily been the problem. Arran dating Cariad also hadn't really been the problem. Arran deciding he wanted to ask Cariad to marry him, though, that had changed things. Roger had disliked the woman but he had put up with her in the knowledge that she'd fuck out of Arran's life sooner or later, except if Arran would've married her, then he'd be dooming himself for (probably not) a lifetime of misery. Or more realistically, until they'd divorce. Roger didn't want that for Arran. So he'd sacrificed their friendship so to rid Arran of Cariad. It had been... probably stupid, but nonetheless efficient.
"It wasn't exactly hard," Roger said with a snort when Lydia asked how it had even happened. Really, it hadn't even taken them being drunk or anything, Roger had asked and Cariad had been more than happy to oblige. The thought left a bitter taste in Roger's mouth, which he somewhat stupidly decided to wash away with more tequila. Roger had no idea how much tequila he had actually had during the brief conversation but however much it was, it was evidently too much, because his stomach turned. "Oh, shit," was about as much as Roger managed before he ran off to the bathroom to vomit all the alcohol back up.