<p>^ Ravi knew that Clementi was gay. They had a post of Ravi’s (I believe on his Twitter) where he stated something about finding out that his roommate was gay earlier in the month when school started.</p>
<p>edit: This is the paragraph from ABC News that states that Ravi was aware of Clementi’s sexuality:</p>
<p>Ravi tweeted on Aug. 22, “Found out my roommate is gay,” according to Forbes.com, and then posted a link to a gay men’s website where Ravi said Clementi had placed posts.</p>