I think that as long as happiness follows and you are able to walk away if it does become unhealthy for you, then you are perfectly within your means to date whomever you please. There is no limit when it comes to an older man or woman and for some people their experience and wisdom is a major factor in stability, reliability and focus. So that means you must have impressed him and good for you, I say ride it till the brakes wear out...hehe so to speak...Enjoy your life and stay safe, and have fun!!