He doesn’t want to get married

I dont know what to do. I love him alot but i feel like ill be wasting my time if i stay any longer. Its been 2 years together. We’ve lived together the entire 2 years pretty much weve been through so much ive put up with so much and for him to tell me he doesnt want to get married makes me so upset. Thats all i want. All ive ever wanted. I see girls on here that are getting proposed to and their boyfriends treat them like theyre head over heels in love and i cant relate. I dont feel loved majority of the time. Im his FIRST girlfriend ever and maybe it has something to do with that. Were kind of young. Im 21 and hes 23. Im not saying i want to get married right this second but im at the point where im ready to settle down and start a family and just be with someone for the rest of my life. And i dont want to be in a relationship if i dont think the growth is there. Its been 2 years and i feel like we both should know by now. He says he loves me but i just dont feel it and i honestly feel like maybe i could be happier with someone else but i just cant bring myself to leave either 😩😞 this just sucks. Am i being unreasonable? Selfish?