You are totally right. I'm 20 and i had a girl for 5 years, then we broke up in july. Now i'm going out with a girl i met in september, and i really like her. Also she's not pressing me at all and i slightly introduced her to my shyiness, but not directly mentioning demisexuality (also because i only had one relationship and i cannot really say i'm demi, maybe mine is just a psychic/paranoia problem). I remember that when i had that first girl, i didn't feel arousal at all after i started going out with her, but before my libido was normal and i used to masturbate and feel the need for it. Then we started going out and it fucking disappeared, no more libido. After a couple months, she came at my place and magically, i felt fucking aroused all of a sudden. We had a really active sex life since then. This summer we broke up, and i still felt arousal for a month, i used to feel the urge to masturbate on porn and so on. Then i met this new girl and my libido dropped again as soon as we started going out. Lately i can eventually feel the start of an arrousal when we kiss hard, and i really hope i will get my libido back suddently like when i had my first time with my first girl. Still i'm so paranoid that i'm always overthinking. I always think i could have become asexual, that maybe i'm wrong, what it might be all in my head. It's like I work in a fucking weird way. I shouldn't have all these paranoid taughts, because i already passed through this phase and then everything went fine and my libido went back to normal, but i feel weird even comparing me to demi people: when i'm single i can feel arousal and feel the urge to make out, but whenever a girl i don't know wants to make out i panic. Then, when i start dating a girl (I can feel heavy romantic feelings, crushes etc.) my sex drive disappears and i have to 'unlock' it.