I will start by saying the future is not etched in stone, we influence what happens in our lives a great deal with our actions and attitudes. You and the gentleman in question have potential. Psychically I am picking up he is very comfortable with you. I am also feeling however,that there are some things about him that once you get to know him, you will not like and those things will dampen your enthusiasm for him and you may have second thoughts about having a future with him.
Presently, as I focus in on him, I get a sense that he feels he is in control of the relationship as he senses your struggle with self esteem, your anxiety about the relationship and your desire to please. He feels he is in the drivers seat and will be less apt to be on his best behavior which is good because those aspects of him you may not like will come to the surface sooner than later.
Most importantly, I feel psychically (and strongly) that he enjoys being around YOU and your kids but would not want to be left alone with them to babysit. He wont enjoy them as much and he won't be as "nice" to them when you're not there. Your kids will feel rejected and disappointed when this happens but they wont tell you this plus the boyfriend will try to hide that from you as well. He may even have tendency to favor his kids in a "kid conflict" if he was left to watch all of them at once.
As I focus in on the scenario in the future, I feel sadness from your oldest child and resentment towards you from the oldest and the second child ONLY if the above scenario is allowed to take place. I see a picture in my head of either a vulnerable dark haired boy or a tomboyish girl with a sweet smile turning into a frown and a heartbreaking sadness accompanied by a sudden pain in his/her stomach at the moment your boyfriend reveals his "not so friendly" side.
This child has a potential to have stomach problems that will be present for the rest of his or her life unless he or she is encouraged to express his or her feelings. He/She wants you to be happy and will hold his/her feelings in if he/she feels communicating them to you would somehow disrupt your happiness. I'm including this
psychic insight about your child because I sense that you do love your children very much and you would want to know this. The oldest child will exhibit bad behavior in the future if he/she holds too much inside. This will definitely affect your relationship with anyone!
This relationship can work. Don't place him in a babysitter situation even if he volunteers until you have been together for a while. Let the kids really get to know him so mood changes won't be taken so hard; they will already know his moods-good and bad. Keep encouraging your oldest to express their feelings to you every step of the way. When some of those potentially undesirable traits come up from your boyfriend that I mentioned earlier, address and resolve them immediately and don't back down. If you let things go, the relationship will fail. That is what I psychically sense based on your personality traits. You have a tendency to sacrifice your standards or "overcompromise" and he has a tendency to get too comfortable with his ways.
Let me know what you think about what I've discussed and If you have any further questions, don't hesitate to post a reply to this topic.