Reply To: How can I understand if he likes me?

If you don’t want to be hurt emotionally or hurt your career, you need to focus on the this training class and less on this guy you just met. Are you there for the job or for dating prospects?

How much time have you actually spent talking to him?
Will you be working together?

I wouldn’t. It’s not a good look and people can get the wrong idea. Stick to dating out of work.