In my opinion it would be fairer to say this: the cheating path Lisa does not only cheat on Danny but whichever boy she is engaged to at the time, she is her unfaithful character, so the cheating can continue with her next boyfriend. In this case the story with Danny ends, but the cheating path continues.
But Lisa isn't dating anyone but Danny. So, if she breaks up with him, she can't cheat on anyone unless she gets into another relationship. That could happen, but until it does happen, the end of her relationship with Danny does mean the end of the cheating path.
? Could somebody explain the diff between these 2 routes, they seem awfully similar to me.
By strict definition, cheating is cuckolding (if a man is being cheated on) or cuckqueaning (if a woman is being cheated on), since the definition of a cuckold is a man whose partner was unfaithful, and the definition of a cuckquean is a woman whose partner was unfaithful.
However, when it comes to erotica, pornography, and sexual fetishes, sometimes words take on additional meanings. The term "cuckold" as it is now most commonly used has one of these special meanings. It means a man whose partner is unfaithful, but he knows about it, and still remains in the relationship. Sometimes, he wants her to stop cheating, but she won't, and he's not willing to leave her. Sometimes, he actually wants her to cheat, because he gets a thrill out of it.
So, in this game, the cheating path is when Lisa is cheating on Danny, but he doesn't know about it. The cuckold path, which only becomes available at Jayce's party, is when Lisa cheats on Danny with his knowledge, and he doesn't do anything about it.