Seriously, I don't know if you've realised but you are creating a story, here, to 'explain' him - and beyond that, your relationship.
I think you've created a narrative of him as a gentle soul, who doesn't know how to 'do' adult relationships, and needs gentle guidance from you.
Now, that may be true - but you can see why a few posters on here might find that a bit worrying.
While it's perhaps great to approach a potential new partner with the generosity with which we engage with children - and to enter into a relationship assuming that our partner isn't perfect, all-knowing, and fully-formed - it really should be reciprocal, ideally. That is, the role of 'child' should be able to be passed back and forth; each partner should be able to take on the role of both adult and child, and display both the adult and child aspects of their nature and have them acknowledged by the other.
You seem to simply be taking on the role of parent.
This rarely ends well.
Not always: there are clearly a few relationships where people are very happy to remain statically in the role of adult or child.
But I doubt this is one of those.
What happens when you need him to be the adult? To be someone you can lean in, help you make a decision, or to help you change and grow?
You'll end up irrationally cross. And it will be irrational because you seem to be very willing at this stage to establish a relationship modelled on an adult-child relationship - with you as the wise adult, he as a child-needing-guidance.
I think that you will ultimately find this frustrating.
All of us need help, guidance, generosity and understanding at times. It's nice that you recognise that need in him and are prepared to do it.
However, you also need to see those things being given by him to you. If you don't - and don't allow him to show you those things at this stage - it risks setting up a relationship pattern that will simply end in frustration and failure.
You're not his therapist, you're not his mother - although at some points, you may temporarily offer support-through-tines-of-change and intimate compassion.
But most adult relationships also require other things.
For example, where in these therapeutic phone-calls are the conversations in which he conveys to you his longing for eroticised intimacy? His curiosity about the mystery you hold for him and his desire to be embedded in your narrative?
It's early days, so that curiosity should probably be taking the form of sex and shared activities - not off-loading on you the story of his last relationship - which is a kind of proxy story for an intimate relationship, and deeply unsatisfying for you as a lover.