Don't feel bad sister Filisteen. It's reakky understandable that these things might happen. Although I fel and know that the most samrtest ofg all girls or women is a Muslimah, I also know that only the best one is a really Islamic one. A devouted Mumin, a modest one, a hijabi, a one who loves Allah and is a caring person. But fact is, i nour society there aren't that many of those kind of people today. It's mostly in Muslim nature to, unforutantely. Talking about people behind their backs, making fun of someone they don't know (seriously firl or boy, I would've popped that person in the mouth if they ever talked smack about someone who never did anything to them!), or they aren't good freinds.
There are 3 kinds of friends sisters: Aquintances, which is just a person you knwo, and maybe a lot but you don't really talk to them or anything, a friend, who is someone who you laugh and talk with in school or whatver, and a best friend, a person who you really feel has a place in your heart, and you know a lot about them, and you two are like buddies.
And knowing someone for a long time may or may not effect someone's freindship. Like I havae this boy in my class who I knew since I was 4 yrs old, and my parents knew his parents even before he was born, but still he's just my friend, we laugh sometimes, and talk to each other, but he'd never tell me his deep scerets, even though he knew mine fro mlong time ago, and he knows I'd never let slip or mention it. And he likes his other friedns who he knew since 6th grade, even though it was 6th grade, he likes HIM mroe than me. I cope iwth it, cause I don't really care.
While at school, I had two REALLY GREAT friends. They were both Hispanic, one was Puerto Rican, and another one was a mixed black/white/spanish Dominican (mostly white and spanish), but they wer my buddies. I'd stick up for them whenever they'd get picked on, if they're being dissed, no matter if the joke is funny or not, I still don't laugh at them, even if it's just us playing around, and I never make jokes at them, unless they say one that I'd really not like, but I'm just playing around and not Serious.
But I'd really love it if they wer Muslim, and if Allah could guide them to Islam, because they're concious people, but they'd still need something like Islam because they come from a certain kind of culture, and I'd never be able to see them in Jahanam, or see them crying on Qiyamaat because they never accepted Allah Ta Alla. They shall be in my duas when I go for Hajj, and please make dua for them also, they're my best buddies.
But still to get to your issue sister, a BEST freind IS someone who is in your heart, and your ther for them. THere might be reasons why people wouldn't tell you somethings personal about themselves sister; It might be because people usually tell their personal stuff to other people that they "admire" (deceiving in a Kafir society!!) or people that they know a lot. THAT could be one issue, and another could be because they might not really be you friend, or that even if you really like them, they don't like you.
Like I remmber my cousin in the UK. Her mom once called, and then after she hung up, I was like to my sisters, "Gosh I wish I could've talked to her (my 2nd oldest cousin), becasue I really liked her, because she was a lot like me. We know the same things, we like the same things, and we know alot of the Islamic Aqeedah, finally that we love learning about Islam and that we try to be REALLY pious Muslims."
So anyway when we went to the UK again because of a canceled flight, my sisters told her that, and she was like Eww, and she was edging away from me, so I got MAD angry cause for one she said ew to me because I said that, I mean, I'm her little baby cousin, someone who here and her older sister use to bicker over when I was a 3 yr old little baby, and who always hugged me and loved me when I was little, and when I meant "like," I mean "like" and not "love", which if that was it than I'd understand, because LoL you for one shouldn't go to a Muslimah like that if your not married to her and if she doesn't love you, LoL, but she wasn't actign like I'm Icky or seomthing, it was kinda like "Eww, LOL YO!" or ya get what I mean. You know, bit mumor in it even though no one's laughing?
So don't feel bad sister. Even though this dreind of yours doesn't really like you, nor does your other friends, I know how you are sister, and I know that your modest and kind and evrything sister. And I'll be there for you sister, and remember to love Allah because as long as he is in your heart, you'll know that HE shall be ther for you, and he knows EXACTLY what happened or whatever, so he also knows how you feel and he shal comfort you.
Allah Subhanna Wa Ta Alla is the one who has been in my heart ever since I came back to Islam, the devouted Islam. And I alwasy knew that he was ther, and that's the only thing that never made me want to die, because as long as he's with me, I know I can lean on him, I can count on him, and I know that as I look up azt the sky looking for him and smiling, his beatiful mercy and light shines down and beams on my face. LoL Kinda explains why I look so better after he's in my hert and when my Eman is really strong, LoL Mashallah.
Assalamu Alykum sister, May Allah help you with your troubles in this life, and may he have your life to journey on in his name, and to have your life be happy and great, Ameen. May he make your life be filled with the love that you need, Ameen!