Hello
FaithHopeLoveWelcome to bpdfamily

I sorry what brings you here, I'm also glad you found us and joined us here for support and learning how you can help yourself, with our support.
I hear you, you're heartbroken, it's overwhelming, you are grieving and in need of a hug I'm glad your son reached out to you, when he needed help, that he has done this is significant, he trusts you, they are positive steps from my personal experience and if it was his counsellor he texted that too. My 30 yr daughter (30DD), was diagnosed at 26 like your son after hospitalisation for self harm, she's now managing her BPD post DBT with meds for depression, mood, anxiety. It's been a journey.
There is Hope.
It's a recent diagnosis, it appears he's taken it well in the sense he's attending outpatient drug and counselling. That was my DD's first step, she was alcohol dependent. She said the mindfulness element of the programme was very helpful. Is there a treatment plan apart from the drug programme?
Was you son highly dependent on his girlfriend? Is he now living alone?
I'm glad you have your faith and a strong support network, therapist and family here who truly understand, is critical to help you move forwards.
Have you read much about BPD?
Your right it's not the life we wanted for our children. They have to find a life worth living for them and that's different.
We're walking with you.
Hope.
WDx
PS in 2016 my DD rescued a kitten and she called it Hope.