Most Helpful Girl
He really does not sound sure at all. You do not mention when it is that he cheated on you, whether it was closer to 10 years ago or more recent.
I think he has become very comfortable with you, hence the "can't imagine life without me" statement. But he obviously has reservations about the future. The fact that he cheated is not good but seeing that you two have probably been together all of your adult lives yet not married, tells me that he may be very conflicted.
I would ask him what he thinks the rules of a break are. If he is asking for space away from you to think things out, that is one thing. If he is asking to be able to have a break to date and/or have sex with other women but have you as a backup option if nothing better comes along, I would tell him that won't work.
That you should be expected to be the quietly suffering, patient girlfriend sitting around celibate while he goes off and sows his wild oats is not cool. Marriage and love is not about rating women on their sexual technique. Guys, like women, marry out of love, connection, emotional attachment, seeing that person as someone they would want to spend a long time with. You don't need to have sex with other women to figure that out.
I wish you the best.6THIS IS NOT RELEVANT ANYMORE