I have gotten very attached and connected strongly with a boy I have mutual friends with. I’ve spent practically the last ten-ish days with him and he spent $80 to see me again in a few weeks. 

An ex-fling of his needed to drop something off (his new car battery) and wanted to talk to him about things. He promised everything would be alright but I haven’t heard from him in two hours and I feel sick to my stomach and like I’m about to be left and like something bad is going on and I don’t know what to do. He has given no indication that he would do such a thing but I barely know him and I am used to it happening all the time. I have already invested a lot of time and effort into him in this short period of time and I don’t want to be hurt. What should I think? What should I do?