I am sorry to hear about your diagnosis, but as many others have said, as long as you keep up with medication you should be able to live a long and healthy life.
Second, although the provider has lied about his status, he might not be the vector as long as he is taking medication. Undetectable = Untransmittable, so if he kept up with his meds chances that he is the culprit is low. So while this is upsetting I think you should consider your other partners in terms of the source.
In some states, transmitting HIV is a crime, sometimes a felony (there are several news articles about this). The laws were written during the start of the AIDS crisis and they are almost always used to unfairly target gay men.