You notice his certainty first, the way he states an opinion like he arrived at it through a system nobody else has access to. He notices how carefully you do everything, and mistakes your caution for agreement when it's really you reserving judgment. What you both misread early is that his detachment isn't coldness and your editing isn't disapproval.
Emotional Connection
★★★★★★★★★★You feel things in the details, in whether he remembered the thing you mentioned once, and he feels things in ideas, in whether you take his thinking seriously. He doesn't reach for you when he's upset, he goes quiet and abstract, and you have to learn that the quiet is him working, not leaving. You give warmth through usefulness, through fixing what's broken before he asks, and he sometimes doesn't register that as affection because he was hoping for a conversation instead. The connection holds when you stop waiting for him to emote on your schedule and he stops treating your worry as a problem to be argued out of. You feed him through the small steady things, the coffee made the way he likes, the appointment he forgot now somehow on the calendar, and that is your love language even when he was hoping for words instead.
Communication
★★★★★★★★★★He talks in theories and you talk in specifics, so a simple plan can turn into him questioning the premise while you just wanted to know what time you're leaving. You correct things, the wrong word, the flawed logic, and he enjoys that until it lands on something he's decided is settled, then he goes immovable. The good conversations are the ones where you bring him a real problem and he reframes it sideways until it looks solvable, which is genuinely something you can't do alone. Keep the small logistics separate from the big debates, because mixing them is where you both get sharp.
Trust
★★★★★★★★★★You trust evidence and consistency, and he is consistent in his own way, just not in the ways that show up on a calendar. He won't lie to you, that's not where the risk is, the risk is that he'll commit to something in principle and let the execution drift. He trusts you because you don't perform, and because he can hand you something and it gets done without a status update. The thing that erodes it is when you start managing him quietly, doing his half too, building a private ledger of who carried what, and he eventually senses the resentment before you ever say it.
Shared Values
★★★★★★★★★★You both respect competence and have low tolerance for people who are all talk, which is part of why you recognized each other. Where you split is that you value the thing being correct and finished, and he values the thing being interesting, even if interesting means leaving it unfinished. He'll champion a cause and you'll wonder who's handling the logistics of the cause. You build something durable when you let his vision set the direction and your discipline set the pace, instead of each insisting the other one is doing it wrong.
Chemistry
★★★★★★★★★★The pull here is mental before it's physical, the charge of being understood by someone who doesn't bother to understand most people. He's slow to move, more comfortable observing, so often it's you who closes the distance once you've decided he's worth the risk of being read. He responds to precision, to being met by someone who noticed exactly what he was doing, and that attention is what gets under his guard. What cools it is his tendency to step back into his head right when things get warm, to intellectualize the moment instead of being in it, which can leave you feeling like you're wanting alone. The heat returns when he stays present and you stop keeping score of who reached first.
Long-Term Potential
★★★★★★★★★★You can build a real life together, but only if you each stop trying to convert the other. You will always want more closing of loops than he naturally provides, and he will always want more room than feels safe to you, and a working version of this is the two of you negotiating that gap honestly instead of quietly grading each other. He needs you to handle the structure without making him feel managed, and you need him to show up for the standing commitments without being reminded. The danger is a slow drift into roommates who admire each other from a distance, you running the household, him running his projects, neither reaching across. What saves it is that you both actually respect each other, and respect, in your case, outlasts the things that wear other couples down.
Stop waiting for him to feel the way you feel, and start noticing the odd, specific ways he already shows it. He should stop assuming your silence is consent, because the day you stop correcting him is the day you've stopped caring.