The Lovelines.xyz website offers custom keepsakes made through AI technology for $12. Customers can choose from personalized poems, song lyrics, stories, or letters to create a unique gift for their loved ones. The process involves filling out a small form, uploading a photo, and receiving the custom creation in their inbox within 24 hours. The keepsakes can be used as wall hangings or shared on social media. The website also offers affiliate programs and customer support.