Enduring Love
A 2004 British psychological thriller starring Daniel Craig (a few years before he began his tenure as James Bond) as a normal straight man (who has plans to get married) who unexpectedly becomes the target of a gay stalker (played by Rhys Ifans) who believes the protagonist (played by Craig) is in love with him after they meet in the aftermath of a freak accident.
A very interesting film about the darker side of love. Well worth a watch.
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Silly NTs, I have Aspergers, and having Aspergers is gr-r-reat!