Have I blown this? If not how do I fix this? Possibly asking guy out second time?

I asked a man who I used to work with out to dinner. I really like him. When I asked him out I was nervous and asked him out under the guise of a business dinner. Essentially, I told him hat that I had some job related questions and could he meet me for dinner. We had a great time- he laughed whole night. I haven’t heard from him since. Part of me thinks contacting him again is desperate and just give up. But another part of me thinks he really thought it was just a business dinner and if he knew I was interested he’d be into me. How should I proceed? Do I just let this go?

Have I blown this? If not how do I fix this? Possibly asking guy out second time?
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