I only played Cameron's route with Jace, but I really didn't like it and here are my reasons:
1 There really was no romance. You don't even properly kiss him outside of the epilogue, actually we don't even kiss him at all in what's supposed to be his romantic route. His dramatic route is actually more romantic than his actual romantic route lmao. Considering that I just saw here a CG of Jace kissing Stephanie then I can assume this is not as big of a problem in the straight routes.
2 The only drama in their route was self inflicted by Jace not wanting to date guys. And that's it. Not even the bet mattered. And that's really boring, cause all it took for them to start dating was for Jace to finally get over himself. And all we got after Jace accepted his sexuality was a preschool level relationship, like what college guy would even wait around for that ? Especially one that doesn't even have any emotional investment in Jace (like Adrian does), like realistically he would've just cut his losses a long time ago.
3 The CGs on this route are very badly drawn. Like seriously, the "chibi CG" was literally the only one I found cute and that should say it all. And the fact that I just saw here a CG of Cameron, which I can only assume appears on his route with Hazel, where he actually looks handsome instead of looking like an old man with red dyed hair makes it really insulting, as it implies that nobody could be bothered to put some proper work on Jace's romance with Cameron.
4 Cameron is quite obviously written to be romanced by Hazel (while I assume Adrian is the one written for Jace from the comments, even tho I didn't play his route), if the quality of his CGs between their routes didn't make that obvious already then I think the fact Cameron is still shown to be attracted to Jace's twin sister even at the start of their route should say it all. Honestly it seems like each LI is written for a certain twin, which really makes romancing them as the other twin awkward. I don't want to feel like a second choice/rebound in a dating sim, especially to my twin character !
Sorry for what looks like an overly negative review, but I really wanted to express my throughts. If other people like this route then more power to them.