Should I take the risk to text him again in the future?

I've known this guy fr bout 3 weeks and we often chat via online together. He is a guy in my school but I seldomly meet him or talk to him face to face. I love to chat with him coz he is funny and I felt entertained to text him. But idk why suddenly he didn't reply my text again for 2 days. Mny ppl said that he didn't interested with me. I just want him to be my 'text pal' and I hope that I can text him everyday..I want to try one more time to chat but I'm afraid he will think that I'm annoying and I'm too aggressive,..what should I do?and how to deal with my feeling?ppl told me to tell him straightly if I just wanna be a friend,but now I don't even know how to start the conversation with him again,I don't have many courage to do that anymore (cz usually its be me that always open the conversation with him).pls hlp me..thx