"Ah, yeah. Tally. I think Sam hates no one more than him." So maybe Barty should not have slept with him, but it had been fun at the time so he could not bring himself to truly regret it. Perhaps he would, in future, should Sam ever find out about it. "Did you know that he wanted to question your people on the trafficking? DCI Hunt, that is. So I've got a feeling that he's itching for it, you must have pissed him off somehow."

No surprise there. "He hates me because he's platonically in love with Sam, but his hatred for you is red hot as well."