He has cheated so many times on me in the past we 5 kids

Are you saying that he has cheated on you many times in the past, and that you have 5 kids? And are you asking how do you know he loves you?
He doesn't!! If he respected you, he would not be cheating on you. If he trusts you and loves you, he wouldn't be cheating on you. I would be leaving, if you are living together. If he is just a boyfriend, I would leave him. There are many, many nice and honest men in the world, and you can find one of them. Good luck.