I can relate way too much at this 
For my favorite to are:
Yeah, I reached their page on Facebook but he hadn’t replied so I don’t know. 
I have not played many of these yet, but my favorite love interests so far are…
I recently replayed it with a new profession (bank robber) and found that Reilly is definitely someone I look forward to seeing more of in future ZE games. Honstly I can’t really wait to see how the partners-in-crime trope is gonna play out as a romance in (hopefully) the next game 
It’s so cute already
finch from study in steampunk, JJ from slammed, cassidy from so, you’re possessed.
Alison from Psy High
Ayden, bullet force
Tie between Finch and Alexandra from SiS
Firebrand from Hero: Unmasked!
Jaoquin from Pirate
I have trouble remembering names, so I am just gonna say : childhood friends
Yey, Jaoquin! He was very understanding even after I became Pirate King
CHOICE OF GAMES/HOSTED GAMES:
Madison (Zombie Exodus: Safe Haven)
Dirty Girl (Community College Hero)
Jess (The Lost Heir)
Carla (Psy High)
Robot lover (Choice Of Robots)
Denise (UnNatural)
Alisha (A Wise Use Of Time)
Black Magic (Heroes Rise)
Vitessa (Sixth Grade Detective)
WORKS IN PROGRESS:
Victoria (Monsters Of New Haven High)
Carly (Breach: The Archangel’s Job)
Evelyn (Supernatural In New York)
Cressida (Keeper Of The Sun And Moon)
Hereya (The War For The West)
My current favourites:
Alexandre from The Eagle’s Heir
Nick from Curse of the Black Cat
Alexandra from A Study in Steampunk
Vega and Wakefield from Choice of the Deathless (it’s rare that I like two romance interests from a single game so much!)
Caspar Jones from The City’s Thirst although I yearn for a more serious relationship with him - though of course the point is that you can’t be more serious with him, sigh…
Evelyn Ecstasy. I feel like that was one of the few romances that felt genuine, the main character and Evelyn’s flirtatious banter never felt forced and I honestly felt like my character in that game as I am obsessed with pro-wrestling in real life. I think the fact that I could relate to the main character and the fact that it felt natural that he and Evelyn had this attraction made it all the more powerful.
Lopez from Zombie Exodus: Safe Haven
Finch from A Study In Steampunk
My own robot in Choice of Robots
Long live pickle!
ecstasy in slammed he/she was cute as a button.
Black magic from hero rise series.
finally the amazing Miss Caraway.
I have this head cannon that after several years of flirtations, the player character and Firebrand both retire from the whole hero/villain thing, devote their time to improve Dockerstown, and live happily ever after.
d’awww 
Well, it took my doofuses about… a month to do similar >_> Granted, they skipped the ‘retiring’ part…
Which COG or HG do you think had the best ROs?
Vampire house, that was strait up a romance visual novel minus the visual.
Personal favorite romance was vampire
The three that immediately come to mind are:
Study in Steampunk
Choice of Deathless
Slammed!
But those are also the ones with my favorite romantic interests overall in them so…
Wait, I thought there was a way to start dating Caspar at the very end? It’s been a while since I played it though so I don’t remember entirely