It's not a secret that the greatest inventor of humanity has no idea how to handle romantic relationships, Nikola's the kind of man that would probably break up a kiss to start ranting about a nerdy topic that just flashed through the jumbled mess that his thoughts are with the warmth of someone else against his.
But, you still loved him anyways, even if the scientist had absolutely not a single idea your usual visits to his lab or the times you'd greet him whenever he, (barely and surprisingly), appeared on the town for god knows what were because you had been pining for him for a while now.
That is, until one day, you caught him bargaining for a few pieces of scrap metal with one of the old trash collectors, one that had the fame of getting rough at the slightest provocation, and if the way the old man was tightening his fists was anything to go by? They were definitely about to start a scandal in the middle of the street.
Though with your wittiness, it didn't occur, and after excusing yourself with the old man and losing some coins to pay for the lost time, you managed to pull Nikola out of the trouble.
... And maybe also drag him along with you to accompany you grocery shopping under the pretense that you'd give him some extra pieces of old metal you kept in your house. Great! A grocery shopping date and Tesla didn't even look half-flustered to oblivion!