need advice

tomorrow i'm hanging w/ my ex at his apartment. i'm kinda nervous about it. i think i might still have feelings him but he recently got out of a relationship so he's not ready for that. idk how to feel about it. my parents don't want me to hang w/ him much less go out w/ him again. they want me to focus on my studies. and my mom and sister dont like him. more my sister. she can be very overprotective and she's younger than me. we dated like 4 years ago. why do i still think about him all the time. we hung out before last week at the mall and then we went to the park and talked. the thing is we went to the same park we would hang out when we were together. our relationship was pretty physical relationship we didn't really talk that much many just made out. it was a high school realtionship. we're adults now but would anything change if we got back together? i would like to think so cause we only dated for a while. we didn't have enough time to get to know each other well. so i need advice should i just stay friends w/ him, get back together w/ him in the future, maybe become fwb or just cut him out of my life. idk there's a part of me that wishes to get back together w/ him and another wants to tell him that we can't be friends. we could be fwb but i would probally end up falling for him and what if he doesn't catch feelings for me? then what, i'd be hurt all over again.