What could have happened? Does he still like me?

Well he is a manager so he showed his interest to you probaly far as he could in a work environment.With out risking being accused of harment in the work place The next steps in terms of exchanging numbers has to be done by you. Being that your not in the position of employment in the work place.I think its worth a shot he basically has his hands tied he cant be aggressive like in normal situations and ask for your number. Because of risk of punishment or penalty by his work place. You may have to ask or even give him your number discreetly. Cause the other employees may be watching. good luck. Its gonna end well for you I got a feeling