This app was mentioned in 3 comments, with an average of 2.33 upvotes
SMS schedule app for girlfriend? Lo and behold, the BroApp! https://play.google.com/store/apps/details?id=net.broapp.app
Have fun:)
Here's one, called the BroApp : https://play.google.com/store/apps/details?id=net.broapp.app