If married more then once for ten years, and your highest paid EX made more then twice as much as you, drawing half benefits for life on that ex's benefits will exceed drawing your own. (remarry kills that.) The key ten years married (and currently single) qualifies you and the ex is not involved in any way.
Your ex may be still working but must be 62 or over, and you must have been divorced for 2 years before it can start.
Your working income drawing on theirs seems to not be a factor either. The rules on starting date, like 62 with reduced benefits, When 66 goes to Half benefit, etc.
Verify this all, of course, with the Social Security Administration.
The big thing is no matter how little your ex made, you are able to draw on theirs while still working and not draw on yours until you reach 70, not starting drawing yours until then and stopping drawing on your ex's will increase your benefits, drawing on your account, increased 32% for life.
If you would normally have drawn $1200 a month, Now you will be in the $1800 area.
$6,000 a year between 70 and 85 will net you $90,000 additional income.
Tell your married friends to hang in there until ten years.
Yes, You can do the increase by delaying drawing social security til 70, and do it without an ex of ten years, and yes, it's worth while option, divorce help or not. Your author did it without an ex benefit.
Has already added 94 thousand (at 81) and lost about 40k by not drawing it normal time. Net so far 54k by doing it and Here on is even more bonus. If had died at 69 would never gotten a dime after all those years paying in.
Especially, do it, if you can get by without the money now and you expect to live well past 75.
Would strongly suggest holding off drawing anything until 70. If situations or health, etc., change and as a result change your mind, you can start drawing it, and whatever delay until then will increase benefits some.