I’ve lost connection

So, I just turned 18 last week, my bf is 17(January) and he proposed. I felt EXTREMELY pressured to say yes, and ive been struggling to fine genuine intimate love for him.. he has never treated me wrong, and we are very close in age, but i feel his immaturity has taken a toll on my ability to love him intimately. I know i have a tendency of jumping into relationships with guys.. past issues.. Anyways i think ive got cold feet? Cant stand him texting me, saying “I love you”, trying to touch me. My parents ADORE him, i just havent been feeling any vibes. Most of the time i feel weird, like he worships me. We kinda broke it off once before and he went full mental(trying to make me gifts and make public scenes, getting school officials and even my mother involved to guilt me into staying) He fears being a shitty guy, and constantly is saying he’s “******* up”. I know no one is perfect but he has no money management, complains about EVERYTHING, extreme lack of motivation to finish school, and sometimes gets extra grabby. He throws pity parties on and off all day, and refuses to give anything a chance unless it has some form of marijuana in it. He’s begged me to stay, saying he would “give me a child” like ive always wanted. I just think that i should stop wastig time and focus on getting a good job, my own place, and keeping myself stable before any of these crazy things. Hes cute, and i do believe I loved him at one point, but I can’t find it in me anymore.
So, what should I do? Break it off completely? Stay friends?