HELP what should i do with this guy?? ideas+something to do on starting a convo would helpppp or ANYTHING?

As a guy, that last phrase "i have to go" would really scare me and make me think that you don't like me anymore. So most likely he thinks you aren't interested, and yes, he most likely does want you for the . If you're interested in him, just go talk to him, he is waiting for you to. He doesn't talk because he thinks you are not interested in him and that's why excuse "i have to go" and then you never talked to him again.