All these aspects of his life will inevitably become tangled in your life, and it will be a challenge to keep these things from ruining your relationship.
It's important to remember that most kids of divorced parents, still hold out hope they will get back together. Allow the relationship to grow stronger, and more secure, and then you can develop a relationship with his children.As much of a cliché as it sounds, just be there for him, for whatever he needs.This is a stressful and painful time, especially if your boyfriend has kids with his ex-wife.After going through a divorce, the last thing anyone wants is a new partner introducing new problems.Love each other for who you are, not where you've been, but at the same time, be sensitive. Depending on how long he was married, you might find he does things that you find odd or inappropriate. Let him know there are things that may have been okay in his marriage, that are not okay with you.