guilty in this relationship.

so i been with this guy for 3 years now.. We met at his work (family dollar) .. and i got his number .. so we texted for about a week or two and he said let's go on a date? so he picked me up girl my house and so on... couple days later i went to his house (parents house) and hung out. We watch a movie and stuff ;) lol that time i think we were together like he and me were girlfriend and boyfriend .. but i remember him saying something about another girl he was talking to . Then i remember saying "oh well i can go it's kinda weird " then he said "no its nothing serious" blah idk what he said i have a bad memory.. so after that we were together and stuff and now going on 3 years together this month. BUT did i ruin them ? Like why did he chose me to go out with and be his girlfriend when he clearly liked someone else before me? ..

till this day i still think about it and it gets me depressed.. I told him about it but he says "i don't remember telling you that " they never even hung out when we were talking . but he chose me instead right ? i mean obviously. 😕but i feel bad about the other girl ,maybe she liked him a lot ?*sigh*