Infidelity? Who's been talking about infidelity? The OP seemed to be speculating on the possibility of marrying her boyfriend; others talked about marriage as opposed to common-law or dating relationships; then people got talking about what to call your SO; a couple of bitter and peculiar exchanges occurred - but infidelity? Did I miss something?

Okay, it's coming back to me ... a couple of posters talked about someone they knew whose marriage(s) broke up, and infidelity had occurred ... Way up the thread somewhere ...