Dianna Agron and Mark Salling attended Jay-Z&amp;#8217;s &nbsp;sold out show at the Gardens last night. The two were VIP and hung out backstage with Jay-Z after the show sources say.&nbsp;

&amp;#8220;They were lovey-dovey all night, singing a long and just having a good time.&amp;#8221;

Way to ring in the new year you two!