whats wrong with me?

Im in love theres a girl i fell in love with the second i saw her i kno she liked me she used to flirt with me stick her tonge at me in school and always laugj at my stupid jokes i didnt ask her out at that time bc if she said no itd b super akward but wen i finay did over facebook she added me as a friend but ignored my message then i tried texting her and she ignored that 2 now couple years later i have a girlfriend and kid but i stil feel im in love with her dont say anything about my daughter shes my 1st priority and well taken care of but as far as my relationship goes its not going great and it might b vetter for her if we split up but even when it was good i thought it wasnt fair bc i was and still an in love with the other girl it bothers me bc i think constantly about what could have happend if i asked her out back then its an issue and a constant burden in my life i realize shes probably not into me but the back of my head says theres a possibility if i could talk to her 5 min alone but idk just moving on isnt an option what the hell is wrong with me