How Do I Know He’s The One???💍

I love my boyfriend more than words can express. Through all the bad times and great ones. We’ve shared so many memories and experiences together already in this 2 year time span. People always say “you’re going to meet so many other people” and we ourselves have even talked about it. We are both going to college and are going to have our own careers so obviously there’s even MORE room and time to meet MORE people. We both agreed to each other and made a commitment so far that we are only interested in each other. When we first started dating I made sure and expressed to him I only date to marry. I’m not interested in “sex buddies” or dating for “fun”. I’ve been through a lot of horrible things and the last thing I want to do is date multiple men and share myself with them physically or mentally. I told him anything can happen and he and myself included , know he’s 100% not obligated to marry me. All this time he’s been with me he’s known this and awhile he expressed to me that he does want to marry me when he is financially stable and can have something to offer me such as ( a wedding ring, a nice home to start off, saved money, and completing the goal of starting our careers). Right now we do live together but with his grandparents. In my mind as a female Christian I would think that since we already live together, are loyal to one another and are also being intimate (God please forgive me😅 bc we’re obviously not married) and that we do love each other that it’s a no brainer to get married. I really don’t want to be committing fornication or “pre-marital sex” when we already do love each other and have a great relationship. I know marriage is WAY MORE than just that but I don’t see myself being with another man and I would one day want to have his children. I’ve also told him my point of view but yet I still understand his because I know men do think different sometimes. So as of now we’re just going by his point of view but does my way of thinking make sense to some extent or am I just rushing too much ??? Also my mother has been married once to my biological father and then to my step-father. My biological father has been married and has been with numerous women (he’s never been in my life though, I sadly don’t even remember his birthday) he has 17-21 biological kids, my half brother and sisters. My grandma and grandpa on mother’s side has been married twice , same with my grandpa ( her dad). My family has divorce and step parents all around. I’m not saying it’s bad or that I don’t love them as well but I don’t want to ever be divorced. I know things can happen obviously along the way but I don’t want to follow anyone’s footsteps. My boyfriend is Hispanic and his father was deported when he was younger and his grandma left her husband (his grandpa) to go back to Mexico when my boyfriend was little. His father isn’t in his life due to unfortunate circumstances but that still creates a void in his life. His grandma that left didn’t divorce but she never came back. Also his other grandparents that we live with, they’ve been together since they were 16 &17 but they’ve know each other since middle school, they are now in their 60’s. His grandpa cheated once on his grandma though. Once again , there’s a lot of divorce but also infidelity, including my parents. My step-father had a child on my mother with another woman. Anyway I’m very lost and scared to get married but at the same time I would love to. Same for my boyfriend. We just don’t really want to repeat or think ab being the next couple like that. How do I know if we are truly ready and that he is the one I want to have a life with and vice versa.‼️???We are saving up for our own place, enrolling in college, and planning to get another car so we do have some goals to accomplish still. We are both pretty open and thorough with each other and honestly do love each other, we share a lot in common. Some views and opinions would be greatly appreciated. Please no negative comments.💙