If I'm a lukewarm or otherwise dispassionate person most of the time, do I deserve anything better? You know, from those who might have the misfortune of becoming my significant other?
First of all, I need you to stop telling yourself stories. In two short lines, you described being with you as a "misfortune." Well, sugar, one person's misfortune may be another person's jackpot. Second, life is what you make it. If you choose to be lukewarm and dispassionate, then it would seem you are content with that. If you find someone equally lukewarm and dispassionate, then you should be able to maintain those qualities without much change—except sleeping arrangements. Hell, maybe you are already in the perfect relationship for you, but haven't noticed it because of your passionless tepidity. Third, life is awfully short. Wouldn't it be better to let loose a little and see what might happen? Passion is a fire and it must be stoked. If you're too lazy to keep the fires burning, it would be naive to expect to have ardor thrust upon you. If you are comfortable with the meh-ness of your life, then welcome someone equally comfortable with meh-ness and meh together, meh-pilly ever-after. I would challenge you to love yourself more and uncover the coal of passion.