Of all topics on earth, this is the closest to my heart. Friendship is the only thing that's kept me going and the only thing I've been able to feel/enjoy over the last couple of years. Let the random thoughts spill!
Different friends have different "roles" or ways of fitting into your life. You love them all heaps, but your relationships are just different and cater to different aspects of your life/personality. The language, medium, frequency, topics, style you use to communicate - hugely varied.
Like, some different friendships I have:
- One I see every couple of months and we don't text/talk online, but when we catch up it's completely comfortable, we know each other inside out, and can talk about anything; it just flows.
- With another friend, we spend about twenty seconds on "so how's uni treating you?" before diving headfirst into incredibly passionate and honest discussions of life, the universe and everything.
- Some friends I support, some friends support me, and some friends it's much more both give and take (more balanced).
- A couple of friends are banter friends: we don't talk about how much we love each other, just insult each other non-stop
- Another friendship is based mainly on our shared love of music and plays
... and so on.
Then again, I have a loose definition of friendship. My way-more-introverted sisters say that they don't have anyone, or at most one person, they would consider to be "friends", whereas I'm far more inclusive, though never to the extent that Facebook labels friends

Then again, do some people have more "capacity" to love? I feel like some people can love and trust more people more deeply than others can.
Which reminds me: do you think there's an
age range for friendship? For instance, I'm quite close to people of various ages: a 10yo, 50yo, 60yo, and a number of 80yos, for example. But I wouldn't really call any of them friends even though there's really no difference except that they're not my peers. Thoughts?
Then there's
~Internet Friends~. It's a weird dynamic, because I could take on several completely different personas and be several people online that could each make friends with different people (or even the same person!). Thus when you're friends with someone on the internet, you're friends with the image of themselves they project, which is much more manipulable than in person, and which may or may not match with who they genuinely are. An internet friendship isn't real to me until I've met the person once at least and it tallies with who they are online - and yet it offers you the chance of getting much deeper in ways you might not in person, too.