TV Guide had the following spoiler for season 3:

Will Terry and Arlene still be together when we return for Season 3 of True Blood? — Anna
MICKEY: Yep. Executive producer Alan Ball told us that the happy couple “will make a surprising discovery that will bring them closer together.” Translation: All that free lovin’ they did under Maryann’s spell will result in an unplanned pregnancy. I hope the baby has hair that looks like a sunset after a bomb went off.

WooHoo!! Now that’s something to look forward too!