I know this is a dumb question since Greg fall in love with Rose but still, I means can Humans really fall in love with Gems?
Would you spend your entire life with IMMORTAL being?! The only thing that is SUCK about falling in love with Gems is when Gems get pregnant, They have to give up their physical form in order to give a birth for your children! So much falling in love with Gems
It's suck for Gems because if they dating a HUMAN, they know that person will die of Old Age! It's ludicrous! This is CRAZY!
Love is supposed to be strong enough that the inevitable death of the human partner wouldn't be enough to stop the gem partner from engaging in the rela, as well as if the human partner is female there is a possibility that if they attempt to have children that the gem would not dissapear, at least if that gem, or gem fusion is half human...
So i believe that yes a human male or female can be in love with a gem.