Take that as a good lesson then. Poly people are no better than monogamous people. I think if you can could see a snapshot of poly people vs mono people. The tendencies would be the same.
Some people find love through sex
Some people get sex after finding love
Some people do both
Poly or mono, that applies. Don't get discouraged, just understand the differences and try to find the ones that interest you. And yes, thats the same as in a "mono" bar.