The two of us, who have so much in common, will move forward together.
We will be together like two peas in a pod.
The two of us, who are so alike, will walk together (through life).
似た者同士 = people who have a lot in common/are cut from the same cloth/ are alike/ are like two peas in a pod (鞘の中の2個の豆)
「We are two of a kind will spend time together.」は文法的に変です。直し方は：
1) 「who」を入れる：「We are two of a kind who will spend time together.」
2) 「and」を入れる：「We are two of a kind and will spend time together.」
アメリカ合衆国 
