What does a fork at the beginning of the marriage line mean?

What this means

First confirm the fork sits at the outer edge side of the relationship line, not at the inner end of the line.

A small beginning fork on a strong line may show temporary early pressure that settles; a wide fork on a weak line is read more cautiously.

Compare the heart line, nearby cuts, islands, breaks, the rest of the marriage line and both hands before predicting separation.