Is He Still In love with Her?

So i am Engaged to a guy who i am head over heels with. But i have a problem.

For three years, he was in love with this girl, who used him, seriously, she got him to be her and her boyfriend personal chauffeur, she fully knew he liked her. he did anything for her. And he was in love with her. we've been together Now for 9 months. For 6 Of those months they were still talking, and having coffee dates. Whenever i brought her up, he'd get very angry and defensive. His family can't stand her. His best friends couldn't stand her.

I didn't like what i heard about her, and it was effecting our relationship, he actually canceled dates with me, if she wanted to hang out.

If we were cuddling at his place simply watching a movie, and he got a text from her, he'd stop cuddling me, and wouldn't hug me, or kiss me. He'd get very cold. It got to a point where he'd just get grumpy about her. I asked him several times if he loved her. he'd never be honest with me.

He stopped talking to her three months ago. But anytime anyone mentions her he gets defensive. He says he doesn't realize it, but does this mean he is in love with her still? I'm just worried he's not actually interested in me. And still longs to be with her.. I know she'll do anything to get what she wants. Any advice to what to do would be Very helpful. thanks sorry it's long.

Cheers.