Can I please have some advice on this idk wat else to do?

[Adam]

Ok. I have this really good friend of mine (I kind of like her but I don't think she knows it but she has a bf so im not gonna get in the way) but we have been talking for about a month and a half, but we knew each other from elementary school a long time ago. We're in high school now (Sophomore year) and we used to text each other a lot. I would compliment her on stuff and she'd say stuff like "awh thank you " or "Awh you are so sweet " I even wrote her a song (not a love song but like a song dedicated to her I guess lol) and she thought it was sweet. She even said that I mean a lot to her and she tagged me in a post on facebook (plus some other people) saying I thank God for these people everyday I love them so much. Well, we haven't been talkin really much now. We would usually talk like 3 times out of a week but now its like three times a month. I would text her but she wouldnt text back, and facebook is the same way. I saw her at school yesterday and I told her about it she said that her phone would say something like it's blocked to send messages to this person or something. Well I told her to try it out at that moment and the message went through and it sent. She said she would text me last night but she didn't. So, I was sad about that a little bit . I also notice that when I talk to her at school, we're with a group of her friends and she has a laugh and smile talking to them, but with me she does look at me but it's just a small smile. I really don't know wat to do. I've lost too many friends for absolutely no reason and they just leave. I really don't want to lose her, because we have so many things in common, and she is like one of the best friends ive had. What is going on here? and What should I do?
oh and I forgot we talked about if it's ok with her bf for me and her to talk to each other or not. She said that he said it was totally fine unless I do anything like really weird or something.

[Crazy Girl]

it could be that her bf got jealous that u 2 were so close n told her to stop hanging out with u. i guess all u can do is move on. the ones that r meant to stay in our lives will n the ones that aren't meant to stay will fade

[Emma]

Her boyfriend probably got upset about the things you would do for her and told her to keep her distance away from you. Most likely i think its her boyfriend ruining the friendship between you too.