That statement that all the good men are already in relationship is simply not true.

I have seen case after case where people continue to be attracted to inappopriate partners, and like the movie Groundhogs Day, repeat the same mistake time after time, and continue to blame it on everyone but themselves.
Find out why you are attracted to the wrong type! Sure it's a lot harder than blaming all those "No good men/women" but it's the only way you are going to ever have a viable relationship.
Living with a therapist and being attracted to the wrong type of women myself tells me that I know what I'm talking about.

Case in point, a guy I know was talking about this wife and that wife, finally, I asked him how many times he'd been married. He said "7 times". I said "Doesn't that tell you something"? he answered, "Yes, I just havn't found the right one yet."
And, he was dead serious. He doesn't have a clue!