I chose a DC romance comic's run edited by Joe Orlando because he used one writer I can recognize at a glance paging through the comics: Jack Oleck. Another writer surprised me, although he's known to have worked for Orlando in 1969 on House of Mystery—see GLS 146 on the list.
As far as artists go—with the inkers striving to make everything look alike, you could ask ten people and get ten opinions, but here are mine. I will point out that "Laura" in #152 has been attributed to Art Saaf by his son, Steve Saaf per the CGD, but the evidence of the art itself shows that, under Jack Abel's inks, the pencils are by Werner Roth (above). On the other hand, Art Saaf's pencils under Colletta on "The Cheat" in #153 (below) have gone unattributed. "He Loves Me...He Loves Me Not" in #144 mostly looks like Roth, but on page five I see one panel with a close-up I'd otherwise credit to Saaf.
With the new stories hard enough to ID, I've left out the reprints with their slapdash updating obscuring things even further.
Note that the name in the #144 story is not Margaret but Margret; it took me a while to actually see that. I haven't seen issues 148, 154, or 156—romance comics not having been collected as assiduously as superhero ones, there aren't any uninterrupted runs of the DC titles that I can find.
UPDATE: I've added corrections (in bold) from Robin Snyder and SangorShop taken from Joe Orlando's payment records. See the new post for the additions of features like the text pages. Nothing more than the surname Scruggs is known about the artist in #155; a possibility would be Wilson Scruggs of the syndicated strip "The Story of Martha Wayne" (1953-1962).
Girls' Love Stories edited by Joe Orlando
|Apr/69||142||Thrill-Chick||w: ? p: Jim Aparo i: Bill Draut|
|So Long in Love||w: ?
p: Win Mortimer
i: Nick Cardy
|What Should I Do?||w: ? p: Mortimer i: Cardy|
|May/||143||Love Today--Cry Tomorrow||w:
p: Mortimer i: Wally Wood
|Only Love Can Create||w: ? a: Ernie Colón|
|Cindy||w: ? p: Mortimer i: Cardy|
|Jul/||144||Can Love Last Forever?||w: ? a: John Rosenberger|
|He Loves Me...He Loves Me Not||w: ? a: Vince Colletta|
|Memory of Margret||w: ? p: Ric Estrada i: Colletta|
|Aug/||145||Tears for Tomorrow||w: ?
i: George Roussos
|My Secret||w: John Albano p: Jay Scott Pike i: Colletta|
p: Tony Abruzzo
i: Mike Peppe
|Which Love Is Mine?||w: Otto Binder a: Rosenberger|
|Nov/||147||Confessions||w: Barbara Friedlander
|The Ugliest Girl in the World||w: Friedlander
i: Jack Abel
|Will the Real Prince Charming Please Stand Up?||w: Jack Miller
|Feb/70||149||Forbidden Love||w: Friedlander p: Estrada i: Abel|
|For Better or Worse||w: Jack Oleck
|...But Only in My Dreams||w: Kanigher a: Liz Berube|
|Confessions: Episode Three||w: Friedlander
|Apr/||150||Confessions: Episode #4||w: Friedlander
|Her Secret Shame||w: ?
|Wallflower||w: Oleck p: Roth i: Wood (some Murphy Anderson?)|
|May/||151||The Wrong Kind of Love||w: Miller p: Pike i: Colletta|
|Love Thief||w: Miller p: Roth i: Abel|
|Confessions: Episode 5||w: Friedlander
p: Roth i: Abel
|Confessions: Episode Six||w: Friedlander
|The Prettiest Girl in Town, Poor Thing||w: Miller a: George Tuska|
|Aug/||153||For Love or Money||w: Oleck a: Tony DeZuñiga|
|The Engagement Ring||w: Oleck a: Don Heck|
|The Cheat||w: Oleck p: Saaf i: Colletta|
|The 3 Faces of Love||w: Miller
p: Mike Sekowsky
i: Dick Giordano
|Nov/||155||Will No One Trust Me Again?||w: Miller
p: John Calnan
i: Joe Giella
|Scrapbook of Tears||w: Friedlander p: Scruggs i: Colletta|
|Feb/71||157||One Husband, Two Loves||w: George Kashdan p: Roth i: Calnan?|
|Love Thy Neighbor||w: Oleck a: Saaf|
|Uptight (cheaters)||w: Henry Boltinoff a: Lee Elias|
|Uptight (wolf)||w: Boltinoff p: Mortimer i: Abel|
|Anatomy of a Romance||w: Friedlander