You are downloading the Valentine's Messages XAP file v188.8.131.52 for Windows Phone. Valentine's Messages is a free Social App: Send your love to someone special. Easily send them a Valentine and let them know how much you. You can now download the offline XAP package file to install & try it.
Download Locations for Valentine's Messages 184.108.40.206 XAP file
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Valentine's Messages XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.