Four days after wrote the headline “Michael Sam: I'm Engaged!” neither Sam nor his supposed fiance Vito Cammisano have responded.

TMZ argued that proof of the engagement can be found on Twitter, pointing to a congratulatory tweet that Sam liked by a college friend of Cammisano's.

The couple set off on a European vacation and was happily sharing photos of their journey on Twitter, Instagram and Facebook.

After TMZ released its story, thousands congratulated the couple on social media. A NOH8 Campaign tweet alone has been retweeted 860 times and favorited 1,159 times as of Sunday afternoon.

The latest tweet from Sam was dated January 7, while Cammisano's latest message was dated January 6.

In the recent OWN documentary Michael Sam, Sam, the first openly gay player to be drafted in the NFL, discussed meeting Cammisano at the University of Missouri.

(Related: Michael Sam, Vito Cammisano once broke up but reunited over Christmas.)