I februar 2012 rapporterede medierne, at [[Cory Monteith]] og Michele var begyndt at date.<ref>{{cite web |url = http://www.lifeandstylemag.com/entertainment/news/life-style-exclusive-glee-co-stars-lea-michele-and-cory-monteith-dating |title = Life & Style Exclusive: Glee Co-Stars Lea Michele and Cory Monteith Dating! |website = [[Life & Style (magazine)|Life & Style]] |date = 21. februar 2012 |access-date = 25. juli 2013 |url-status=dead |archive-url = https://web.archive.org/web/20130927011011/http://www.lifeandstylemag.com/entertainment/news/life-style-exclusive-glee-co-stars-lea-michele-and-cory-monteith-dating |archive-date = 27. september 2013 |df = }}</ref> De blev sammen indtil hans død i juli 2013.<ref>{{cite web |last = Freeth |first = Becky |url = http://www.marieclaire.co.uk/news/celebrity/543714/lea-michele-gives-emotional-interview-about-boyfriend-cory-monteith.html#index=1 |title = Lea Michele Gives Emotional Interview About Boyfriend Cory Monteith |website = [[Marie Claire]] |date = 25. juli 2013 |access-date = 25. juli 2013 |url-status=dead |archive-url = https://web.archive.org/web/20130727055919/http://www.marieclaire.co.uk/news/celebrity/543714/lea-michele-gives-emotional-interview-about-boyfriend-cory-monteith.html#index=1 |archive-date = 27. juli 2013 |df = }}</ref>
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