This is me in most relationships, I dont want to rush. Just let it play out. I think in that situation a third party action is going to be the catalyst for that clarity. Since both agreed, I dont think its "on" anyone specifically to ask. Its on whoever had that experience with with a another person to get clarity. Couldve been a "so what are yall doing" conversation with a parent, best friend that sparks it. Maybe an event that only a bf/gf should be brought to, not a casual relationship. Maybe its a tragedy that brought yall close. Or sometimes, its a jealousy thing or concern with potential infidelity (most often its this). And having that "locked in" will ease that person's concerns.And there you have it! But let me ask you this, say if a woman goes on dates with a man and it's all good but they both agree they're open to a relationship but don't want to rush head first. As time progresses, it seems like they are. So should the man or woman ask if they are to get clarity or does it matter?
In any case, whoever feels some type of way (good or bad) or is concerned with wasting time should broach that subject.