<human>: Can you provide a brief overview of the text?

Hey guys! Hope all is well for everyone, anyways I need some advice..

So , We ended our relationship one year ago, but continued being FWB's. Anyways, He got into a relationship with another girl but we still continued being FWB's. I presume hes sleeping with the girl as well, no biggie for me.

My main concern is, we recently just broke each other off, and maybe I got attached fast. But his girlfriend has a hint something is up with us, she texted me I covered for him. I really really covered for him yet he still just cut me off, and thats really pissing me off.

Well reddit, I need to know. Do I come clean to his girlfriend ( I do feeling guilty) or Do I have NOOO moral ground to do such a thing.
<bot>: Just broke off a FWB relationship, he cheated on his girlfriend with me, she doesnt know. My guilt level is clouding my judgement, should I come clean?