It doesn't matter how many years go by, I will never stop wanting to see you.
It doesn't matter how old I get, I will always want to see you.
ーIt doesn't matter how many years go by, I will never stop wanting to see you.
「何年経っても、あなたに会うことを諦めない。」
It doesn't matter how many years go by で「何年経っても構わない」
will never stop wanting to see you で「あなたに会いたいことをやめない」=「あなたに会うことを諦めない」と言えます。
ーIt doesn't matter how old I get, I will always want to see you.
「何歳になっても、あなたにずっと会いたいよ。」
It doesn't matter how old I get で「何歳になっても構わない」
will always want to see you で「いつでも(ずっと)あなたに会いたい」
ご参考まで!