is it wrong to want an “open” relationship?

i’ve been with this guy for almost a year now and we’re not officially dating. we’re both in college and met in the summer and started hooking up. around that time i was also talking to a different guy and getting with him but became more invested in the guy im “with” now and stopped talking to him. Neither I nor him has gotten with anyone else since then and I do really like him and care about him i just don’t know if I’m ready to commit. He took my virginity and he’s told me he loves me and that he sees a future with me (meaning marriage) but idk if i see the same. i feel like i’m so young and don’t really know what i want. i don’t want to be in a committed relationship and not have it work out in the long run like he wants and miss out on these years of my life.

right now we’re not officially together but i know he’s not seeing anyone else or getting with anyone and i feel like he’d be hurt if i did. i’ve emphasized that i don’t want a relationship however we never said we were exclusive i just don’t know how to bring that conversation up without hurting him. Even though we’re technically not exclusive i still haven’t been seeing anyone else bc I haven’t been interested in anyone like that. so it’s not like i just want to sleep around or anything. i just want to enjoy my time learning about myself right now while also enjoying his company.

i just feel guilty - like is there something wrong with me for wanting to explore my options and be single? i don’t want to try to have my cake and eat it too, i just want to continue getting to know him and just seeing where things go without getting too serious. and how should i be voicing these concerns to him without seeming like i don’t care about him?

i hope i don’t sound cold hearted or mean. i don’t wanna be those jerks with commitment issues (even though i guess i am) i just don’t exactly know what i want and i’m intimidated by the idea of someone already knowing they wanting to marry me in the future. i find it sweet but also scary because I just feel like i’m not ready to fully commit right now. i don’t even care about seeing other people (there’s no one i’m even interested in) i just want to have some freedom. is it wrong to feel this way ?

UPDATE:

i texted him asking to talk over facetime and told him exactly how i feel and that we should end things since i don’t feel as strongly. he said he’s happy that i was honest and that he understands that i don’t want a full on relationship at the moment because neither does he. he wants to wait before anything gets super serious and just enjoy being with each other. i asked him if he was just saying that but he said that he does really like me but wants to figure his life out and finish school before getting into a serious long term relationship. i feel so relieved!! thank you all for the help!! i should’ve just been open sooner instead of worrying