I think Sami's character would be much more interesting if she were a little more courageous. I would like to see her sit down with Lucas and, rather than act like she did something wrong, stand up for herself and tell him the whole story and how it played out the night E.J. took serious advantage of her (it was more than that, but that's another topic). Wouldn't that just shock an unsuspecting E.J., especially if Sami didn't let him know that she spilled the beans. I would love to see E.J. throw his threats at Sami and then fumble over himself once he realized that his only form of blackmail no longer existed!
I do think that Sami will end up being pregnant with E.J.'s child. The writers are insuring a good storyline for years and years to come.