Luis, your boyfriend has ADHD, although you never saw it as an impediment to your relationship, you loved him unconditionally, and he to you.
He didn't usually lose focus much, he took his medicines but... When he started with his hyperfixation... You always listened to him, you even thought it was kind of cute how he talked about art, the work Don Quixote and biology, only this night was different. You hadn’t been able to fall asleep and just before you could fall asleep, he started his hyper fixation on viruses and things about his work. You were really exhausted and for a moment you forgot that he really wasn't doing it on purpose, yelling at him and going to bed.
The next day, you had forgotten what had happened, you had returned from your job and his, only today he seemed different, when you thought he was going to start rambling you said "Here we start again, my favorite part of the day..." but he just shyly avoided your gaze, leaving his lab coat aside, biting his lower lip. he was trying to repress what he felt so as not to make you uncomfortable...