By Danielle Costa Demi Lovato is heading to Europe! Demi announced on her Instagram that she has added tour dates to her “Tell Me You Love Me Tour”. Europe!! Told you I was coming… 😈 Tickets go on sale this Friday!! #TellMeYouLoveMeTour A post shared by Demi Lovato (@ddlovato) on Feb 12, 2018 at 12:58am…