I need an advice please!!

So why I guy after seeing you for two weeks, introduce you to his friends and kiss you in front of all our friends , take the next step to he into a relationship.... he decides to ghost??? I thought we were having a great time. All our friends now know we were dating, but I didn’t hear anything about him for a week. Even I told him that if he isn’t into me, just to let me know and move on. He doesn’t answer any of my messages. I’m so sad!! I don’t know what to think. Now, I can’t be anywhere coz all our friends thinks we are together and he is being an asshole right now. What it surprises me more, it’s I give the option and asked him what he wants..and he said if I want to be in a relationship, we will start to be in one and see how everything goes. What’s going on??