I think that Jared was sent by Allister ( who is still alive.. he's another Steffano.. he never dies) to con Teressa into getting married. If Teressa marries Jared, wouldn't he be entiled to all the Crane resources??
He certainly would be entitled to some of that Crane power and it would be so easy to take over any authority and position Theresa has in Crane industries. I really think Jarod has bad intentions towards Teresa trying to rush her into saying Yes to his proposal.