sassysaysso
Do hope you manage to resolve this and you get to spend some time in Cornwall. In the meantime it reminds me of this feminist cartoon from the 80s:
Scene - man, woman, cat
Roger: Either that cat goes or I do
Thought bubble from cat: Bye Roger, we'll miss you, close the door on your way out.
OP - not suggesting this is how you resolve the situation!
Neither am I, but I could be and am afraid that your friend, Beautybumble might just say something along those lines.
If the gentleman means something to you, which I assume he does, you must find a solution.
If you cannot afford a cattery and really have neither a friends nor a neighbour who will feed the cat and change his litter tray ´, then advertise in one of your local shops for someone who will pop in and feed the cat.
Or go for a long weekend, having put out plenty of food and water for the cat and two clean litter trays.
I left two young cats, closed in the house with the cat-flap locked overnight, and had a friend come in on the morning of the day I was coming home to give them more food and open the cat-flap.
I was very dubious about my welcome when I came home, but the tom-cat purred delightedly when he saw me and rushed to eat some of the food he apparently had been saving for later - sister tried to be huffy and didn't quite manage it, but the following day forgave me and brought me a mouse at dinner-time!