You make connections with the opposite sex in the pre earth life. There is nothing wrong with your attaction. It is Godlike. But, you must be honest with her and prepared to marry her forever. I am 47 and have four beautiful daughters. One is 18. I would not be averserse to you marrying her if you were an honorable Godlike man. God has hundreds of wives. Jesus also had many wives. I believe he is our example, and doubtless some were young.