It feels impossible to fall in love

For some reason im scared to start liking someone or fall in love. Like my friends talk about how much they like this guy or sum like that but for some reson im scared to commit really. I think for me it might be because when i was younger (and now) i was clearly not liked and i was bullied. Like i knew i was not liked and i was often bullied either for my looks or my personality and i can to some extent understand why but im still not liked even tho i have entirely changed since 7th grade (i go in 10th now). I think that the fact that im not used to being liked has made me scared to like someone because my first thought is ''they probally dont like me'' or ''they have probally heard something about me from someone'' and thats why i feel it being hard for me to like someone. I also think thats people only remember me from 7th grade and they dont know me now. Can i get some advice because i really dont know what to do:(