Have us print this for you
PLA from £6 inc. UK delivery on letter-sized prints. We slice, print on a calibrated Creality K2 / Bambu A1, QC and post.
Based on the beautiful design (http://www.thingiverse.com/thing:246864) by Roman Hegglin (http://www.thingiverse.com/roman_hegglin); modified to add supports for printing, and added letters *inside* the heart.
You can modify further (e.g. to change the letters) with Tinkercad: https://tinkercad.com/things/agFA9z9Gj6D






