Stupid ass Arghh!! would you agree?

I dated a guy for months, grew to like him a lot. We did everything together, he treated me like his queen however on a night out having dinner, he told me he had something to tell me. He told me he had a girlfriend. I screamed! Is this man mad? What is he doing here with me! He must be crazy. I was so upset, felt used, betrayed. So I left, didn’t speak to him again. But he stilled remained on my mind and it was annoying.

Yesterday he turnt up at my work and ask to explain himself that he is in love with me. He started explaining and I noticed something on his finger a ring. Was so confused. So I asked ‘are you married?’ And he said yes. Kmt!

Guys what words can we use describe this guy ?