Okay so I have a friend that I like but his more like my best friend then anything (he's known for about a month) we've been talking everyday for about 2 months known each other for maybe a year or so, he would ask me to call him everyday for about 2 weeks until yesterday I called him and he didn't seem too happy, he wasn't his usual normal funny happy annoying self he was very quiet I asked him if he was okay he kept saying he was "fine" and he just wouldn't talk. I asked him if there's something going on with his gf he answered about 40 seconds after I asked and said no. I'm really concerned, I then made a joke that he made earlier and he got annoyed at me, hung up, I messaged him apologising he ignores it and we haven't really spoken since. So earlier tonight I Snapchat fed him said hey, he sent a black screen so I tried starting a conversation with him and he ignored me! So I've decided I'm not going to talk to him unless he messages me or says something concerning, I think something has happened?? This is really not like him, we usually talk all day and have jokes. He just doesn't seem happy and I'm concerned any advice?