I've come to the conclusion that there are three types of men out there (among those who don't get married by the time they are in their early 30s).
Type 1: The Bad Boy
This category has two subtypes. The first is the Bad Boy who just wants another notch on his belt for getting a Good Girl in the sack. The second subtype is the Bad Boy who thinks a Good Girl will help him reform.
Type 2: The Good Guy
These are really, honestly good guys. They enjoy your company, your rapier whit and sparkling conversation. But they never think of you in that way.
Type 3: The Rotten Sod
These are the guys who do think of you in that way, but they neglect to tell you they are already married. Hence the category title.
I am convinced that these three types account for 98% of the men who find themselves still single into their 40s.
But I am willing to be proven wrong.