Let's keep it short and sweet:
1. Work on your own shit before you get in a relationship. If you are already in a relationship and know you have mental and emotional health challenges, take responsibility for them. The other person is neither your punching bag, or your doctor.
Most notably: Ning, Mark, Sam, Mike and Ines.
2. If you don't like someone and they like you, put your big-kid pants on and TELL THEM. You are not being kind by "protecting their feelings" (which is really protecting your own feelings anyway).
Feat.: Sam the sociopath (who clearly gets away with being a sociopath because he's good looking and confident).
3. If you are a fabulous polyamorous bisexual babe into BDSM, don't go on MAFS, don't ask for a "chivalrous old-fashioned man" and don't ask for someone "completely different to everyone you've ever dated" ... and then wish a 29 virgin would be "everyone you've ever dated".
You know who I'm talking about.