It might've become a chore because its only one guy, before it seems like you've had a large variety and you've just become bored with the same thing over and over again.

I understand where you're coming from with one of those situations (although I will not mention which one on here where it's public).

But maybe you should try some role playing or something like that. A relationship isn't all about sex ya know. So if you love the guy you should stay with him. Maybe you two can even agree on having an open relationship.