Print as many as you need to send whatever message you wish.   Make a necklace or a bracelet or a key chain, it's up to you.

This  is a very simple print with no support necessary, and each heart can be easily interlocked.  Each heart is about 20mm wide, so you can scale them up or down a bit to suit your taste.

Be warned that just like relationships it's easier to put them together than to pull them apart!