SINGLE MOTHERS: HOW WOULD YOU HANDLE THIS SITUATION?

My boys are 6 years old. They lost their father 4 years ago and their brother died at birth. I feel so terrible that i can't move on to dating again for my boys. The other day when i was picking them up from a birthday party that their friend was having they got into the car and both slammed their door, they were furious! So i asked them what was wrong and they both said that Caiden's Dad and step Dad was there and he wanted them both to leave and was being so incredibly rude to them! That really ticks a nerve with my boys, the same thing happened about 2 months ago at Football. But them Dakoda looked at me with tear filled eyes and said "Mommy, why can Caiden have 2 daddies and hate both of them but we don't even have one daddy? It's not fair!" And if that didn't completely break my heart what Dallas said did, he said "Doe God hate us Mommy?" My eyes just filled with tears and i hugged both of them, i just feel so terrible for my boys that they have to grow up without a dad!