I [20M] can’t tell wether I’m moved on and love my current gf [20F]

I’m in college and back home in high school I had this 3 year tumultuous relationship with a girl. It was very on and off and had a lot of highs and lows because I basically cheated on her but we still continued and it was really good but when I went off to college we stopped talking and I was literally depressed. My whole first semester I wouldn’t go to class, I ate like shit, I would write her letters everyday talking about how much I missed her and then when I went back home for Christmas we started going out again and it was amazing but then when I went back to college we stopped and I was depressed again but then in the summer we started talking again and life was amazing but then we stopped but overall I would easily consider her my first love.

I met a new girl in college. She grew up very similar to me, we share so many of the same values, we talk for hours and hours every single day and I can’t name a flaw about her like she is pure wife material. But I find myself subconsciously comparing her to my ex and I know that’s natural and when I do I stop myself as I realize it’s unfair. But even now when I see stories or videos of my ex in her college life it still stings a little seeing her live a life without me and hanging out with other guys. But I don’t think about my ex on a daily basis, I don’t miss her, I feel like I’m moved on and I have this great girl that I’d want to marry infront of me.

So how do I know if I’m moved on or not and ready for this new relationship infront of me?