I don't think that Valentine is a bad name, but maybe if you want alternative names, there are some that I found:
- Adamah: Hebrew name, means red (like blood)
- Chizuku/Chizuki: If you want to go the weaboo route, there it is. Japanesse name, I've read some mixed info about the meaning, and maybe it isn't a real name, but It has to do something with the red moon phenomena.
- Luna: Latin name, Spanish for moon.
Anyways, cool stuff!