Very depressed

Hello everyone. I had to share one thing to all of you Because i don’t have any friends to Share. I'm very sad and disappointed dunno what to do. if i share anyone no one will support and Care me It's always happened. It's been long day my boyfriend It's not replying me. Ik It's long distance relationship but i trusted and love him only but suddenly It's been 1month he's not replying. Nothing happened Between us even misunderstanding. He's not even active in fb where we both talk. I don’t know what happened but he's kinda red flag. i'm 17 and he's 18 he don’t share or never Shared much about him about his family he never even told about his study Job or anything. I'm here to share everything with you guys ik no one will care but im very sad and in fear maybe he leaved, cheated. We're in relationship like 1y 8 month but first time when i used to talk to him he was like crazy want me only no busyness no excuse. But one day he's laptop was not working n he went to his frnd house to talk with me. He says his mom don’t let him use phone so he use laptop for talking to me i trusted cuz i love him but idk if he lied or not. And he let meet with his frnd he frnd says he likes me too. my bf says plz love him too it will 2guy who loves you but i never loved him he know I'm loyal i Won't ever do this but he used to let his frnd talking to me. My question is if he always let his frnd to talk to me then he will fall for me more. I told him this but he keep doing this. And day by day my bf give up writing me when i get mad at him he says i don’t like writing bbay what i want to say he will write for me. My bf sits with him and he always talk. If i don’t want to talk to his frnd he get mad. He always keep saying i don’t like writing but he's the one who wants to talk to me first time. But now his not replying and not even active in fb account. I tried to find him It's impossible cuz i live in asia and he's american how to found out. And if he leaved me idk what to do. I'm the girl who only loved him only loyal for him but I'm sad and depressed now💔. (Sorry for mistakes in eng, I'm asian not much good at eng)