I read your post and immediately thought of this story I have bookmarked as a happy reminder about the nuances of falling in love and declaring relationship status:
https://www.queerty.com/guy-realizes-his-roommate-is-actually-his-boyfriend-in-most-adorable-way-possible-20160318
As fellow posters have stated, you have to be patient. The bright side is that once you wanted a commitment he didn't run for the hills immediately and continued to hang out and spend time with you. To me that is a greater indicator of one's true interest in commitment as opposed to the title itself. A guy who wants to be with you will make himself available. You've told him where you stand in the relationship so no need to bring up the topic for a while or worry about a white elephant in the room, unless you are expecting him to commit. If and when he is ready, he will tell you. Just be there, enjoy the moments, and don't fret about stuff that is out of your control.
It's about the journey, not the destination!
As a side note, How you will feel if you become aware that he is sleeping with other men while seeing you. He may or may not exercise the chance; however, it could happen and are you prepared for such an outcome. If that is an absolute deal-breaker for you, then you must consider whether things can continue as is. You shouldn't settle for less than you deserve but you can't expect him to commit when he's not ready either.
I know falling for someone can come fast and unexpected But once start making changes to the dynamics of a relationship, it's about reaching a mutual compromise with the person each step of the way or parting ways to find someone else who will be the right fit for you.
Eventually, there will be a time where you need to re-examine the direction of your relationship… BUT! In the meantime, really focus on the positives, enjoy the ride and continue having lots of sex!