Twilightprincess wrote:
I personally have found that having a crush is a miserable place to be in, especially if it’s a long term crush. If I want to be with someone, I’d rather be with him than daydreaming about the doubtful possibility we’ll end up together.
Being with somebody could be rather boring, especially when it's something long-term. When you lose the passion aspect, it becomes more like a friendship, and that is not even remotely as exciting as passionate love.
There is also the bonding aspect to it. Many NDs will bond with obsessive thoughts, and when they date or get into a relationship, the bonding phase ends with the (potential) infatuation. Thus, not having "the fun part" means they get weaker attachments.