I got divorced when my daughter was two, and she cried, etc going back and forth when she was young. If you ask her now (she's 30, happily married, 2 kids of her own) she would tell you that she is very glad that she grew up in a home with a happy mother, and with the nice but dysfunctional dad on the edges. She understands why we were divorced. She does not remember the early years.
It is going to be ok.