
I tend to avoid it because I like for things to happen naturally throughout the course of the RP and let the chips fall where they may. Pre-arranged romances can sometimes feel forced or lacking in depth/detail. But I don't see any harm in it and I can totally understand why others do it. It's not as if the issues with it are inevitable. Just like trying to set up a friendship or rivalry between characters to fill a role you think is missing in your character's life, if things aren't working out, you can always just tell the other role-player. You aren't just stuck trying to force two mismatched characters together because it was an idea you had on a forum board.