How would I know if I found a real good guy and not found a fake nice guy?

I was texting a new guy that I matched through on Facebook dating and I did ask for his social media and now have been texting each other from snapchat. I did ask him if you would like to make video calls. He said not now I am in a game with someone. Would you think it is a good thing or not? I would prefer a person to let me know if they can't do a video call and do it at different times or days. Should I wait or let it go and see what happens. I also ask you to have a girlfriend. He said no. I said I don't have a boyfriend. Each is still texting.
How would I know if I found a real good guy and not found a fake nice guy?
Post Opinion