Hi! It was really nice to meet you while I was searching for a new flatmate. I thought we would get along fine as flatties, but I wasn't expecting it to be some kind of whirlwind flatmate love like I've had in the past. Basically, I guess you met my minium criteria: able to construct full sentences in conversation, no discernable psychotic tendencies, demonstrated familiarity with the procedures of washing dishes and general light household duties, and a slight display of quirky personality (as evidenced by your spider earrings and tongue piercing).
What I am trying to say is that I am not really all that upset if you don't want to live with me. It is not going to come as a personal blow to what you for some reason seem to imagine is my fragile emotional state and heightened sense of feeling rejected. Or, to put it another way, you're not that great. Also, I think if you moved in I would keep getting Amy Winehouse in my head singing that song Valerie which would get pretty annoying after a while.
I just wanted to write you a letter to fill you in on one of the most basic rules of flatmate finding ettiquette because you seem to be unaware of it. If you don't want to live with someone there is absolutely no need to keep stringing them along with "I will definately let you know tomorrow" type messages. All you have to do is think up a small, inane excuse and go with that right from the start. Some good, solid examples are: "you don't have a car space" "the room is too small" "I would prefer to live in a different suburb" or "the rent is too high". Any of these are fine and as you can see, they are completely impersonal. Everyone knows that they are all just platitudes and they really mean "I found someone I liked more than you" but the thing is that we all do it. Or you could take the approach of Linda who, while barely able to speak English, managed to let me know less than 24 hours after we met "thank you but I do not take the room". See how easy that was? she didn't even bother with the platitude!
Anyway, just letting you know that I have retracted my offer to have you move in with me because your car space is too small and I want you to live in a different suburb. Good luck with your search for a home,