Your friends and family are right about him and the fact that you're posting here and upset tells me you know they are right too probably, yes?
Think about this: right now he's your bf. Will it get any easier the longer you stay together, what about when you start to accumulate jointly owned things, or marry or have kids? I thought for years things would improve and my AH would decide he wanted to get better. All that's happened is we've both gotten sicker and I've thrown away many many years that I could have been happy, being co-dependent and abused.
You deserve better.