How would you handle an attempt to reconnect after all of this?

So a few years ago at Uni, I dated a classmate named L (I know, I know). Her close female friends were already friends with me before we started dating, particularly one named D.

A few months go by and my relationship with L goes sour. I knew it would create some awkwardness but I was confident of the fact that I would remain friends with those girls since my relationships with predates what I had with L.

I was wrong, it seems. Although they all promised to remain neutral, it just became a bit distant with them. Less texts and invites, that sort of thing. It also didn't help that L was engaging in character assassination on social media and within the class eg. wishing I was dead - especially after I refused to take her back.

D and I remained close but after one particular occasion when L saw D and I having a laugh about some random topic, L confronted D about still being close to me. They fought and D reminded L that we were friends first.

Afterwards, I noticed a change in D's attitude towards me eg. Refusing to make eye contact and intentionally ignoring me in corridors.

Now 2 years later, two of my closest guy friends (from outside of my uni) discovered they have a mutual friend with L and D and now they all hang out at times at a bar I used to frequent. Although I stated that I have no issues with whom my friends hang out with, this feels weird. They do talk about me - in a positive light I hear - and now D in particular says she misses me.

I know I'm going to run into them all eventually. I can keep things civil even though L may not. How should I handle any attempts from D to hang out with me? Is it even worth explaining to D how such acts really hurt particular in that time of my life? wAnd am I wrong to no longer consider my uni female friends as actual friends anymore? Methinks if I did half the stuff L did post-breakup, I would be public enemy no. 1.
How would you handle an attempt to reconnect after all of this?
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