Hi Marco,
I am happy for you and suppose it has something to do with experiencing what I might call "self-regulation," which is an antidote to "dis-regulation." I notice that when people attune to themselves, there is an inner contact and a "connection" that happens, and this relieves pain. I imagine that your contact with your new love is working on a similar level. There is something in your connection with this friend that also connects you to you, and this relieves tension, or regulates, or soothes at a very deep level. I guess it is all happening in you, when you are in this particular environment.
I think I've seen this with a family friend too. When she's in contact with a new lover, her pain goes away for months!
It might be very interesting for you to inquire into: What is my inner experience that is so different? What do I project on this friend that seems to be lacking in me? How do I feel in my body when we are together? Is there a pervasive feeling that I am safe, or seen, or loved? Does this mean I am not having to deal with the Inner Bully? Very Cool.
Bravo!!
Andy B.