I saw a preview for a movie about a couple who I think were newly weds and they went for their honey moon to an island, then the guy goes psyco and won't let the woman leave the island... I really want to watch it and cannot figure out what it is called.. my husband and I have been trying to figure it out for a long time.. we have rented a few movies thinking they could be it, but haven't had any luck yet.. if you know what it is please help.. I think it came out about 2 or 3 years ago... THANK YOU ;)

I saw a preview for a movie about a couple who I think were newly weds and they went for their honey moon to an island, then the guy goes psyco and wont let the woman leave the island... I really want to watch it and cannot figure out what it is called.. my husband and I have been trying to figure it out for a long time.. we have rented a few movies thinking they could be it, but haven't had any luck yet.. if you know what it is please help.. I think it came out about 2 or 3 years ago.... THANK YOU ;)
Devil's Pond: Devil's Pond (2003) (http://www.imdb.com/title/tt0329162/)

I think I finally remembered - Devil's Pond (2005?) .