How I felt about this movie (spoilers)

I actually really enjoyed this movie because I was half awake and ready for bed but I forced myself to stay up. Normally I just decide to watch it the next day, but I've always love psychological movies. I felt like it was a very good movie throughout but the ending threw me off. It felt like it ended abruptly and after reading this board I've come to understand that is considered an ambiguous ending. I like the idea of leaving the ending open to interpretation but I wish they would have given us just a bit more to run with but that's just my 2 cents. Overall I wouldn't say it's a ground breaking movie but I enjoyed it more than some other movies I've seen.