Don’t make yourself the hot young girlfriend
Even if you are truly the hot young girlfriend, you don’t have to live or depict that fact. Take pride in your relationship and leave the age part of it behind. In the end, you’re his girlfriend and he’s your man. While you may be younger than him, don’t let yourself live and dwell in that mindset, or else it can be detrimental. You may find that you almost convince yourself that he’s just with you because of your age. So lose that frame of mind.