TBH - I had a lot more stuff planned, including exploring the NTR kink more, but I realized that i bit off more than I can chew, so a lot of my planned stuff had to be shelved for maybe some DLC's or something after version 1.0 is done. However! The endings will be in Act 5... I have 5 endings planned ( and some various side story wrap ups, that aren't considered 'endings' really) One of those five endings will be an NTR I have mapped out. Just so people who used that switch and wanted more have something before this story is done. It's kind of an intense ending (don't want to spoil it) and it ties in with the MC's revenge angle. All I'm gonna say!
EDIT: Sorry, no coffee yet this morning - I just realized I never answered your question. NO - I do not plan for any other guy to touch any of the LI's moving forward - Other than the VIP club scene where April lets a customer touch her (NTR selected ON only) early in Act 1, there has been no men touching these LI's except the MC or other females if the player selected they wanted to see that - The final ending for NTR will involve the MC and his EX - It's more the MC cucking someone and there will be flashbacks to the MC getting cucked at the beginning of the story. There's a big twist planned for people on a certain path as well.