Adultery occurs when a married person sleeps with someone outside his marriage vows. Therefore, he committed adultery. Simple. It's also very difficult to prove unless someone admits to it in a court of law.
You need to step away from this man. He cheated on you, he cheated on her, he's a POS for doing that. He needs to figure all this out before he involves himself with anyone else.
You sent him money???? And you dare to put down his wife, who got a job with no GED or HS diploma? I wouldn't go giving yourself airs about your intelligence -- aside from the obvious less than smart decisions you're making in sleeping with a married man, your post is written in **text speak** and is rife with misspellings, grammar errors etc.
Run away from this situation and don't look back. He cheated on you, he cheated on her and there's no real evidence that he's going to stop.