I think I know what you're saying, op,
You never desired to have children, but then you had a child, and now you can't ever imagine your life being without him, and it's been an adventure that has filled you with more indescribable and unimaginable richness and joys then you ever would have believed.
And you're wondering if having a partner is the same? You don't have one, you never wanted one, but you're wondering if you had one, would it be the most wonderful thing ever?
Well I think that's kind of a little bit of fear of missing out, we always wonder about the path not taken, and is the grass greener on the other side?
The thing about kids is for the most part, they're always going to be your kids no matter how old they are, they're always a part of you, and if they're yours biologically, they're at least 50% of you. They are your direct lineage and progeny and descendants and they have your blood and your DNA.
But a partner doesn't. I think that's why more people can divorce / separate from their partners rather than separate/disinherit from their kids.
One is a person that you are legally bound to until you're not because you dissolve the contract, the other is a person who is your flesh and blood.
I think it's easier to fall in love with your child than it is to fall in love with another person though. Your child is this tiny perfect little thing that comes out of you, and you can't help but love them and protect them and be there for them and nurture them and teach them and accept them. A partner is a fully realized individual when they meet you and although they are able to change, and become your other half...some don't. They're like a big stubborn rock that refuses to budge and you have to do all the work and change yourself to suit them. Sometimes it's not such a terrible thing, as long as you like the person who you are when you change the suit them, but, it often leads to a lot of resentment.
Are you wondering if 2026 is going to be your year to find a great partner? If so, I wish you all luck in the world.