You say your H was married twice before but both marriages were short, one produced 2 children. That requires a certain amount of time.
Should have said 1st XW was pregnant when they got married - I think that was the reason why, and the boys are only about 12 mths apart. Both of H's previous marriages lasted no more than 5 years combined.
Both 50 S14 M 16 yrs (his 3rd; my 1st)
ILYBINILWY - 24 Dec 2012 H moved out - 27 Jun 2013 Legally separated - 6 Sep 2013 Closing the door and changing the locks