Lauren Alaina announced her engagement to longtime boyfriend Alex Hopkins on July 21. Lauren, who posted a pic on her Instagram page that shows off the new rock as she kisses her beau, captioned the photo: “Being yours forever has a nice “RING” to it. #HoppilyEverHopkins @_alex_hopkins WE ARE ENGAGED. EEEK. 💍❤️” Lauren, 23, and…