I hate my daughters fiance & want to break them up!! He doesnt deserve her!?

My daughter is only child & is 25yo and has a series of terrible relationships to her name, she constantly falls for idiots. She became rebellious and lost a sense of reality when she met her partner at age 14. He is a pro-motorcross rider with a body full of tattoo's one with her name & his daughters, he is a deer in the head lights with her and is all over her, he watches her when she talks to some guy friends he doesn't know, tells her he doesn't know how to live his life without her. He just doesn't fit into our family even though my daughter say's she loves & adores him, he is like nothing she is use to & says she is the happiest she has ever been. She was 17 when she had her daughter & we lived in CA, i couldn't handle it and we moved to Las Vegas so he didn't see my daughter that much only my granddaughter and they broke up as rumors circled that he was cheating on her, she has since moved back to California and they are back together for the last 4 months. She just told me she is 2mnths pregnant with their second baby and is terrified & said he wants to marry her but she fears its all too fast, he's always very pushy with her. If he wins a championship he goes over to her, kisses then puts her over his shoulder and takes her away from us. My daughter knows how i feel about him but i don't bring it up to her all the time, they know as i sometimes have slight remarks at him saying that his motor-cross career is not a good example to his daughter which really pisses him off & he will answer me back. I don't want my her with him first because he doesn't deserve her, Im not trying to be horrible but im trying to protect her from the hurt he caused her. I know its bad but i would love for her to leave him, i wish i could make her see she deserves better. Any advice on what i should do/handle this. Thanks in advance