Limiting my friends to a single person is very hard to do. Most people have multiple others that they care for on the same level. Labeling someone as my favorite out of so many other friends of mine is just... difficult. That said, I have many people who I care for more than others. I'm sure they know who they are, though. If not, all they have to do is ask. I have no problem telling anyone how I feel about them.
Sorry if this wasn't the answer you were looking for. It's just... something that's extremely hard for me to do.
lol. After repeating how hard it is for me to do, I think I got my point across. XD