How early is too early?

I know there are a few posts like this one, I’ve been searching around for them 😂

Does anyone have an opinion on how early is too early for engagement and/or marriage, both within a relationship and age-wise?

My boyfriend and I have been together for less than a year, and we’re in college, but he’s recently been telling me that he thinks I’m “the one,” and I honestly feel the same about him. We won’t actually be getting engaged or married anytime soon, definitely no kids for a long long time, but we talk about a future together a lot, so I’m just curious if anyone has any thoughts on the topic as a whole.