He didn't speak, all he did was show him his hand with the ring, grabbed Ren's hand and showed him the ring, thats giving him the hints that they're gonna have to get married. He then showed the shock collar to him.
He grinned triumphantly
"....."
Lukas looked at Ren
"It'll never be a real relationship, you know...."
"I can live with that...I want him-and he's mine."
Lukas grinned
"I think my friend has something to say about that."
Kaz hit Ren on the back of the head with a frying pan, knocking him out and causing him to fall to the floor