The Halfling and the Half-Giant

I've been playing WAY to much Baldur's Gate 3 lately and so naturally I'm looking for something fantasy based. This idea mainly involves a couple who are quite physically opposite, one being incredibly large and the other incredibly small, but finding true lust and passion with each other regardless. Now I'm willing to play either end of the spectrum, either the tall or the small, really doesn't matter to me. It will be a dungeons and dragons like setting but I'm not looking to do any mechanics, so no dice rolls or shit like that. I'm willing to take on a GM/DM type of role but really I'd rather we both take an active part in world building together.

Update:  Because I forgot to mention it initially, I am looking for a female partner, you can play either role as mentioned, but I'll be playing a male (possibly a futa) regardless of size.