She’s so into him. Ariana Grande gave fans a glimpse of her romance with boyfriend Ricky Álvarez in a new video recapping her “Eternal Sunshine” tour. Grande wrapped up the 41-show trek Tuesday with her final performance in London, before sharing a black-and-white montage from the run on Instagram Friday. “this experience has meant more to me than words can possibly say … ‘i love you’ doesn’t begin to cover it. thank you. from the bottom of my heart. yours always, ariana,” the “7 rings” singer, 33, captioned the post. Among the behind-the-scenes moments was a clip of Grande rehearsing onstage, when she leaned down toward the edge of the…