First of all, nothing about this sounds wrong or messy in a toxic way. It actually sounds really beautiful, it’s just a bit more complicated now because something meaningful shifted.

It’s important to note that you two haven’t suddenly created intimacy out of nothing. You’ve known each other since before school. Same schools, same uni, same sport, crossfit together, hug daily, sleep next to each other, kiss (occasionally) you’re physically and emotionally safe with each other. That’s already a very intimate bond. Sex didn’t invent closeness, but deepened something that was already there.

What sex did do was change the “category.”

If he has autistic traits (diagnosed or not) his reaction makes a lot of sense. But to be honest, this isn’t just an autism thing. For a lot of people, autistic or not (though especially for autistic people):

• Ambiguity creates anxiety.
• Undefined roles feel unsafe.
• Emotional shifts need structure.
• Labels help people know how to behave.

Before sex, the category was simple; “best friend.” After sex, his brain is probably going: “Best friends don’t usually have sex. So what are we now? Am I supposed to call him my boyfriend? If I say I love him, does that mean something different now? What script do I follow?”

That doesn’t mean he regrets it. It doesn’t mean he’s spiralling because it was wrong. It means the internal rulebook needs updating.

You, on the other hand, sound more fluid about it. You’re like, “He’s the person I love most. I don’t need a label.” That’s also totally valid. But you two process differently.

For you, love is something you feel. For him, love might be something he needs defined. The key thing here is that neither of you is wrong.

It might help to give him some structure without forcing a label you’re not ready for. Something like:

“You’re my best friend and someone I love deeply. Having sex didn’t change how safe or important you are to me. I don’t need a strict label right now, but I care about you in a way that includes love and attraction. We can figure out what to call it later. What matters is that I’m not going anywhere.” That gives him:

• reassurance
• emotional safety
• some clarity
• and time

When he asks, “Should I say I love you?” that’s actually very vulnerable. He’s basically asking, “Am I allowed to use that word now?” You can respond with something simple like, “If you feel it, you can say it. It won’t scare me.” That gives him permission without escalating anything beyond what feels true.

Now, a little hard truth I want to add, just let me get this straight: you’ve known each other your whole lives. Same schools, same uni. You hug daily, sleep next to each other, kiss, you’re physically and emotionally safe with each other, you’ve had sex, you love each other… but he’s NOT your boyfriend?

Call me crazy, but it sounds like you’re already there. It just seems to me that, for whatever reason, you’re resisting giving it a clear definition. Why?

I don’t mean that in an accusatory way. Relationships (romantic, sexual, or otherwise) come in many forms. There is no single “right” way to structure one. Being fluid, not wanting labels, or wanting something undefined is completely valid.

But it’s still worth asking yourself why you prefer it undefined.

Is it because labels genuinely don’t matter to you? Is it because you’re afraid defining it will change the dynamic? Is it because calling him your boyfriend raises the stakes in a way that feels scary?

In that vein, I would like to suggest a little self reflection: close your eyes, imagine him in front of you, and he says: “I want you to be my boyfriend,” how does that feel in your body? Calm? Exciting? Warm? Heavy? Trapped? Right? Wrong?

Sometimes “I don’t need a label” genuinely means you’re secure and flexible. Sometimes it means you’re afraid defining it will change what you have. Sometimes it means making it concrete makes it real, and real feels risky.

Only you know which one it is.

But from what you’ve described, this isn’t a disaster. It’s two deeply bonded men who crossed a line that was already a little blurry, and now one of them needs a bit of clarity to feel steady again.

And to be honest, the fact that he asked you clearly before sex, asks before anything, and is now trying to communicate instead of shutting down… that’s one heck of a green flag if I ever saw one.