I will also chime in and add my perspective as a guy. This man is definitely interested. Enjoy the company and as others have said, if you want to spend time with him, you need to give him some sign. Ask him out for a one-on-one. He's kinda feeling you out to see if you have any interest in spending time with him.
I just want to say that this is so awesome. A while back you were worried how you don't match up to standards of beauty and your age. Let this be the clearest sign you can see - there are men who find you interesting and attractive. You have one RIGHT now who is interested in you. You have tons of value and things to offer as a woman and a person. Please enjoy yourself, whatever version that is for you with him.