This letter shows that even though John Laurens was married it was likely he was not attracted to her, as he married her out of pity.

I should inform you of an important change in my circumstances_ Pity has obliged me to marry_ but a consideration of the duty which I owe to my country made me choose a clandestine celebration, lest the father should insist upon my stay in this country as a condition of the marriage_ the matter has proceeded too far to be longer concealed, and I have this morning disclosed the affair to Mr. Manning in plain terms_ reserving to myself the right of fulfilling the more important engagements to my country.  It may be convenient on some accounts that the matter should be kept secret till you hear next from me, & you will oblige me by keeping it so.

-This entire exscript from a letter written by Laurens can be summed up as "I married her out of pity".

This presents the fact that even if some argue "but Laurens was married" it is invalid as he did not do it out of love.