3 years and no promise ring

So guys it’s been 3 years with my man and he still hasn’t given me a promise ring but keeps saying how he wants a future with me or marry me. Also he is in a failed marriage and still didn’t process the paper work for divorce. He didn’t even have the talk with his wife that he wants to get separated but keeps telling me how it’s been 8 months they haven’t had sex and recently started sleeping in separate rooms, I don’t know what to believe anymore!!!!!

*** Update ***

For people who’s attacking me, i was unaware about the fact that he was sleeping with her too. I was under the impression he is going through failed marriage.

As for the relationship it was under some circumstances that it happened.

Also when I found out he was still sleeping with her, he said it just happened he was probably drunk or something

I don’t know

And I know I’m wrong to stay in this relationship but I’m in too deep and I can’t seem to back out.

It probably don’t make sense how helpless I’m!!!!!