There are plenty of movies in which the guy cheats on his wife or girlfriend, then tries to win her back. It was refreshing to see a movie in which the guy, in spite a few innocent mistakes, is faithful to his wife to the end. I mentioned in my review of He Loves Me He Loves Me Not that the main character exhibits erotomania. That word is not mentioned in Obsessed, but Lisa clearly has the same disorder. The final confrontation between Lisa and Sharon goes a bit over the top, but, again, it's refreshing to see a wife so dedicated to protecting her marriage.
I know nothing about Beyonce's singing. I couldn't name one of her songs. But I saw in the paper today that she won a record number of Grammys, so she must be pretty good. She's a darn good actress, too. I thoroughly enjoyed her in this. Elba was a bit wooden, and Larter was a bit stereotypically seductive, but Beyonce made up for their performances.
I liked the movie OK, but the rating is boosted for the clear, practical warning to all married men to diligently protect their marriages!
Bottom line, 2 1/2 stars.