Far be it for me to judge people on relationships, I've had more than a few terrible, terrible break ups. And I've acted imprudently and hurt them in the past, as well as getting my own heart broken. Relationships are messy. They can also be wonderful and occasionally part well even if it doesn't work out. It depends on the people involved.
But if you are sincerely asking my advice here, Chris, I'd say it's not a good idea. He's what, eighteen? An Ensign. Has he even had a relationship before? It's not about whether you live up to the hype, you're a great man. And it's perfectly understandable to have feelings and want to be happy. But I do think you'll constantly be concerned about the power dynamics and age difference, and what others think about the two of you. Not to mention worrying about living up to his expectations or whether you're doing the right thing. It's not a recipe for contentment. Relationships are difficult enough without everything stacked against them.