Or what can be a sign to one is not for the other. You must be sure in your own soul of your decision in this. A good relationship could have warfare against it by the enemy because of the testimony you can bring. The blessing of God will show in supernatural ways, but most particularly in shared covenant blessings. Material and physical signs are not necessarily the best indicator of God's will when it comes to a marriage relationship.
Godly counsel is.
Certain things coming together can be a sign if the other criteria mentioned here are lining up. Warfare and Temptations - Everyone faces these. There are the seen challenges, and there is always still the unforeseen. A marriage can be made in Heaven but people can transgress. We must remember that people have a will.