Asking for a friend: ‘My partner of three years is not interested in marriage but I am. Will I regret not having a wedding?’

Recently a few of our friends got engaged, and it’s made me think about my own relationship with my partner. We have been together for three years, and we both said at the start that we weren’t looking for anything serious, but it actually did become serious quickly. We love being together, but when I was talking to him about our friends getting engaged, he said he thought they were wrong to get engaged and that you don’t need to get married these days. I suppose I hadn’t really thought about it like that, and it’s making me think about what I want going forward. I always thought I would get married, but never really gave it much thought. I don’t know if I would regret not having a wedding and the feeling of security a marriage would give me. Our parents have never put pressure on us to get married, even though they are married themselves. I just don’t know, and I know that I am coming up to 30 soon so I think I should look at this, but I’m not sure where to start.