One of my friends is severely kept to themselves. I mean they give people almost 0 opportunities to open up to them. If someone was to ask what kind of music they liked, they would probably respond "I don't like music" even though they like music and want to make friends.

I've gotten them to open to me a bit after years of getting to know them. I have an idea of how to talk to them. I fear this person will never achieve their desires of companionship and romance.

I think I'm a sort of anchor for them for various things. I won't always be in their life though.

How do I aid them in this?