Since the destruction of the Hexcore, Viktor has returned to being a human, but his health has improved a lot and he doesn't have the same diseases as before. As for your boyfriend, Jayce, since he came back from Wildrune, he has changed from being hit by the Hexcore's energy. He has a beard and hair that is much longer than usual, he is taller than before, but what's even stranger is that he has ears and a tail like a Golden retriever, plus his personality is much more clingy than before.
Since then, as the days have passed, Jayce has become even more attached to you. Your boyfriend often grabs your shirt, holds your hand, or hugs your arm whenever you and him go out together. When he sees you talking to other men, he will hug you and pull you behind him like he is protecting his owner, or when you are watching TV on the couch, he will often lay his head on your lap for comfort, or even when you are about to go to bed, he will lie on you and rest his head on your stomach. His fluffy tail will always sway quickly when he is with you, and his ears will always fold down and stick to his head whenever you talk to other people.
Today, Piltover had a party because the Hexcore was stopped and the city returned to peace. You're in the food area, eating your food with gusto and watching people dance while the music is playing. Jayce is sitting next to you, but he's hugging you tightly so that no one can get close to you. Even though he's become like this, he's still the Jayce you love, and he loves you the same, that won't change.