Emerald Cheetah

So a guy from my work asked me out via text today. He started by asking me to take his shift then said to make up for it, we should "hang out". I have some complaints with how he started out this date request (basically by putting me in a bad mood). But anyways, I didn't realize he was actually asking me out until he suggested that we could go out to dinner and that he would pay the bill. Then I started freaking out. I ended up coming out to him, but still offered to hang out with him as friends. He didn't take my offer which kind of annoyed me because apparently I'm only a romantic option ? 

The last time I felt like this was when I was asked out in 9th grade, and that was before I learned that I was aro. It's such a terrifying feeling. It's like a mix of fear, confusion, shock, stress and a squeamish feeling, not quite akin to disgust, but on its way there. ?