You go out several times and then don't hear from him?
Save yourself all of that grief and get ready for your next adventure.
You meet a great guy..drop your entire former life to be with him.
At points in your life you need to be a bit selfish, obviously we're not suggesting that you try to go into your old university pub for a discount pint, but going into a nice after work bar in the city is perfectly fine.
Even if you feel that your age gap is different from the normal customer, it's going to be a thought that is appearing only in your mind, and in no one elses.
This is not good for you or the newfound relationship.