I'm not sure, but from the scenes I've seen, it sure has sharing, but sometimes girls willingly have sex with other characters without knowing you're there, so would it be cheating? Maybe yes, but you choose how to react to it , approving the act or not
Well I'll try then, is it like a harem in a polyamorous relationship? Although it sounds like free relationships, although they are not much to my liking, I will try it a little.