Do you believe in that? How are you so sure that his counterpart has the same age or how do you even know his counter is even near you? For all I know your counterpart there could be 20 as well
Sorry, but I can't take you serious on that note. Don't reason with "other dimensions" or anything like that. If we all did that, then I could just commit murder and get away with it, because his "counterpart" still lives. You live NOW and this world. In this world you are just not able (yet) to have a relationship with him. Just accept that. I guess you can call it the harsh reality of life.