Ok. First I'm sorry it didn't work out for you. It doesn't sound like there was that much time or experience shared. Nonetheless
I'm not a big "you're a bigger jerk cause you didn't say it to my face" person. Would you feel better if he took you to dinner, told you there ? And then sit there awkwardly or worse feel like you don't want to see his face a minute longer so you leave.
You can sulk in private and now you know it's over. No mixed messages or wishy washy stringing you along. Or worse using you.