No to either.
Fantasy fiction has a very bad habit of going into enormous details about very bad romances. I swear there are only five types of romances allowed - it is extremely rare that a couple is actually happily married (or engaged, or attached), and if such a character exists, some other character is going to have a stressed relationship.
My group is mostly male; we have only one female member who never GMs. She's pretty; it's basically impossible for a male GM to seriously separate her from her character if they're playing an NPC she's romancing. As for a male GM's NPC attempting to romance a male character's PC, that's not going to happen unless both the GM and player are gay, and right now nobody in our group is gay. (Group composition may change in the future.)