I'm sorry that you feel terrible! But I fostered my Cat Deva in highschool with my boyfriend, but we ended up adopting her. i know how it would feel to get really excited about something, and get your hopes down. maybe it just wasn't the right time.
the right time and the right yorkie will come to you when the time is right, and when that time comes, you'll be very happy that you waited this long.
patience is a virtue. best wishes!