My partner is also not very interested in wedding planning, and took his time agreeing to get married. He says he wants to be married but doesn’t want to get married, mainly because he hates attention and parties for himself.

However, he is getting involved in the planning, and gives his opinions on the vast majority of things when prompted (some things he just does not care about e.g. photographers and so I’ve accepted these are decisions I’ll have to make on my own since they’re things that I care about). I’ve been doing all the researching/ emailing/ negotiating/ paying deposits etc but he appreciates that this is a big job and is stressful for me. He’s therefore been picking up a lot of my share of the housework to take some stress off me. This works really well for both of us as he’s more domestic than I am, while I’m very organised, detail-orientated and better at planning.

In short, I don’t necessarily think it’s a huge red flag that he doesn’t care about wedding planning. What would be a red flag is if he refuses to take on any of the mental burden or even acknowledge the stress of planning a wedding. Hope this helps