American baseball star Alex Rodriguez made fiancee Jennifer Lopez's 51st birthday on Friday special by compiling the singer's milestone moments in a video.  Alex Instagrammed the video for his 3.8 million followers and captioned it: "Happy Birthday, Macha!!! Every moment with you is magical. You are the greatest partner, the best mom, the most amazing performer. A role model. A hero. An inspiration. I'm so proud of you. I love you so much!"

JLo was quick to reply: "Omg!! I love you and feel so blessed today to have you to celebrate with my baby!!"