So you were invited to the wedding as a couple but he didn’t want you to go. He didn’t want his girlfriend to go with him to events that routinely have “plus one” options. How despicable. But instead of walking opposite direction you decided to stick around this guy. It’s very sad. You deserve better. He didn’t suddenly change a year ago, he was always disrespectful and dismissive of you. I hope you find strength to leave. You don’t have to live like this. You deserve a much better life