I’d say you can only be a good girlfriend or a friend if the other person wants the same. If they clearly don’t, then it doesn’t really matter if they have intimacy issue or just aren’t interested. You can’t be their friend if they aren’t up to it.

I’d focus on roots of this attraction to unavailable man and this desire to pursue him no matter what. I’d not focus on why he did this or that because frankly it doesn’t matter, at this point he is gone, and good riddance.

But it’s important to reflect on your actions, your attraction to these kind of men and your behavior. If you don’t look into it, you run a risk of next man being just as disinterested and you being just as willing to chase him (instead of looking for available and willing men who resipocate to your advances)

I don’t know if you see a therapist but it could be very helpful in working on these issues. You deserve a loving man by your side