Friends or more?

Hey there! First of all i apologise for my broke english(is not my first language) I don't even know how to start..i meet a guy(online)like one year ago,he seems to be pretty insecure,i like him very much,tho i haven't saw his face yet(i saw parts of his body) and also don't know many things about him,we spoke at phone but still he does not want to share many things about his personal life with me,we are really close to each other and he was there for me when i needed him..We talk to each other since we wake up till one of us pass out,i don't know how old is he(i'm 24,he said he is older). I truly think i have feelings for him but he does not show me any sign,tho i can see in his deeds that he does care about me,by the way he talks. Sometimes i honestly think he is married and have childrens,that's why he does not want to open up to me haha. What do you guys think? I'm sorry again,english is not my first language,and if i posted it somewhere else than it should be,i also apologise for that.