why do i romanticize people in my head 18f

It seems anytime i become interested in anyone I start to build up this idea of them in my head.

I was recently interested in this guy and he’s more of the reserved type and for some reason that was super interesting to me because I couldn’t really “figure him out”. And I guess because of that I started building up ideas of what I thought they were in my head.

And of course the relationship didn’t lead to anything and for me it constantly felt like I was sharing too much or just putting in more effort than him in getting to know each other. I stopped talking to him pretty soon after that because it became pretty obvious to me that he just straight up wasn’t interested in me. And I kind of think that might be because I gave too much too fast. He wasn’t rude or mean or anything like that it just felt like he was following the conversation and not adding much to it.

Do other people relate to the romancing?? And for the guys did I show interest in not the right way or what’s the best way to catch a guys attention? Is it literally by pretending to not care and let them chase you. Let me know your thoughts!! Thanks