You have a toothbrush at their place, but you still do not know whether you are dating exclusively. Asking feels awkward because you like what you have. Staying quiet means making decisions with information you do not have.
The "what are we" conversation can be simple: say what you want, ask what they want, and leave room for an honest answer. You do not need a perfect speech or a particular number of dates before you can ask for clarity.
Decide what you actually want to know
"What are we?" can mean several different things. Are you asking whether they are seeing other people, whether they want a committed relationship, or whether they see this connection continuing?
Pick the question that matters now. Exclusivity and a relationship label are not automatically the same agreement. Someone might agree to stop dating other people without wanting the kind of partnership you are looking for.
If you are unsure what feels missing, these signs of a situationship can help you name the uncertainty before you talk.
A way to open the conversation
Choose a moment when neither of you needs to rush away. Avoid using the conversation as a test after an argument. You can introduce it beforehand: "I'd like to talk about where we're both at when we have a quiet moment."
Then try something like this:
"I've really enjoyed getting to know you. I'm interested in a relationship, and I'd like to date exclusively. How are you feeling about that?"
Adjust the words to match your intentions. If you want something casual, say that plainly too. Do not present yourself as relaxed about an arrangement that leaves you unhappy.
After asking, pause. You do not have to fill the silence by withdrawing your question or promising that nothing needs to change. For more help putting your needs into words, read how to ask for what you need without feeling needy.
Listen for an answer you can use
If they want the same thing: Discuss what you are agreeing to. Does exclusivity mean neither of you will date or pursue other people? Clarify rather than assuming the label answers everything.
If they need time: Ask what they are uncertain about and whether a follow-up conversation would help. "Would you like to think about it and talk again next weekend?" gives the discussion a next step. You can decide whether waiting works for you.
If they want something different: Believe the answer they give now. Affection does not necessarily mean their intentions will change. You might say, "I like you, but a casual arrangement isn't what I want, so I'm going to step back."
You can ask directly without arguing someone into commitment. They are free to decline, and you are free to choose an arrangement that meets your needs. A useful conversation gives both of you enough clarity to make that choice.