Hello and a warm

We're glad you joined the group -- this is a place with people who understand the unique challenges of loving someone with a PD and other mental health issues. We also understand that people return to and stay in BPD relationships for any number of reasons, and we respect that.
It sounds to me like there is some backstory with you and your exH? What caused the initial separation? Did you two have any kids together? And what led to reconnecting recently?
I think you had a good insight that you may not be able to get him to get help. People generally seek help for things that they think are problems, not things that we think are problems.
As far as you can tell, does he think he has any problems?
Settle in here, click around, and fill us in on the details whenever works best for you;
kells76