Christians don’t go to heaven?

Long story short. Was married to a Muslim man who was heavily abusive and coerced me into doing things I wasn’t comfortable in. I know this sounds like a typical stereotype, but in the beginning of the relationship he embraced me for who I was and it wasn’t until I left him that I realised he groomed me and used the fact that I had no supportive or close family to trap me.

He told me he loved me for who I was, and as years went by he slowly told me things like “Christianity is shit” and “I don’t marry you unless you convert” it was heavily manipulative and I lose my identity I had no sense in who I was.

He also told me that in Islam, Christian’s will not go to heaven. And only Muslims will. This is what scared me into converting. Fast forward four years I am no longer Muslim, I am free at the hands of his religious abuse.

But this question sat in my mind for quite sometime… was he right to tell me that being Christian means that I will not go to heaven? Was this true? Or a scare tactic? Please if anyone is deeply knowledgeable in Islam answer this for me. I need piece of mind that I was not crazy.