I saw the cool 'flip love' https://www.thingiverse.com/thing:3414222 by Scooter250, but the heart kept falling over.

This was a super quick stand and should be redone with more square "U"s, but it works as is if you print with ~-0.1mm horizontal expansion and supports. The model (when loaded in mm) is 10x scaled, so set it for 10% to match the original Flip Love heart.

I'll update someday.