Honestly being a 34yo guy (I don't act that old, trust me) I can tell you there's a huge difference in maturity and life experience between the two of you. Not saying that to put you down at all, it's just the way it is. I personally wont date anyone younger than 25 because of that. Not saying it won't work, just that you need to keep some things in mind if you are going to keep it working.
You really have to try hard to step out of your own shoes, and imagine how different it is in his. This horrible thing called responsibilities has probably become a MUCH bigger reality in his life than when he was 22. Life experience can leave you kind of jaded when you get some years under your belt, because you realize every 5 years or so that you've made a leap in how much you understand, that you were almost oblivious to before. So knowing that, just try to figure out which parts of your behavior he finds cute and endearing, and which parts (the most immature things) he might cringe at a little. He may find your youth and energy, bubbly-ness to be some of the best parts about you, but only to a certain level. I'm NOT saying to change who you are to be with him (DON'T do that please) but just learn to temper some of that immaturity around him if need be. Also if you know you lack experience in, or are ignorant of something that comes up (finances, kids, ex wives or whatever) then think before you go throwing your 2 cents in. Step back and try and understand it whether it's from asking him or another older person.
Other than that just enjoy, and don't let him become your boss in the meantime. You are an adult, and if he wants to be with you he shouldn't treat you like you're his kid.
Also I have seen this work before. A good friend of mine used to date our boss. She was mature for her age, and it worked for over a year.
“You gotta look good. Look good, play good, play good, pay good, pay good, live good, live good, you know eat good... Die good.” - Deion Sanders (FSU!!!)