Hmm yesterday night i let them meet. the Wegie was hissing and growling at the new cat, and on top of that she's on heat now! (please don't judge, vet's orders to delay spaying; the boy is neutered) But the new cat like buat bodoh only, just minding his business, walk2 around. Once the Wegie hiss, he will run back to his room.
The new cat also weird leh, he let us pet him, but then after awhile will hiss at us again. He is not eating and drinking, but is using his litter box.
Any ideas/recommendations on what kind of barrier? the new cat really wants to explore outside the room, it keeps meowing and yowling, and it seems it recognises his ex gf. just that the girl does not recognise the boy lol