Great to see that you're starting to get through this and seeing that there is indeed life - and a decent life - out there. That's the biggest step - when you accept that the bad is now outweighing the good and it just can't go on.
The first few months after a breakup with a BPD are truly hard - I purposely stayed well away from any of our regular haunts as I knew that once she'd 'cooled down' she'd walk back in like nothing happened and though I had definitely decided that we were now finally through, I didn't want to put myself in temptation's way.
Friends are great but unless they've actually been with a BPD long-term they have no real idea of what's involved so they just assume you can quickly get over this relationship and jump straight into another. They have no idea of the huge mental cost of what you've been through and how it's made you
very wary.
Just get out there and enjoy yourself doing all the things you like doing - and probably couldn't do while you were with a BPD. I often find that good things happen when you aren't looking for them

Stay strong and good luck.