I’m going to put on my Langdon apologist hat for a second.
He’s not being a dick to santos. Hasn’t been all season. He is playing it cool because he knows he fucked up, so no he isn’t attempting to apologize bc they need to have a relationship where they can speak to one another before he can do that.
trinity isn’t making friends, she’s pushing her girlfriend away, cause that “casual” remark from a couple of episodes ago was definitely Garcia throwing that word back at her. She still needs teaching.
I know Mel choosing Langdon to treat her sister has really been taken over by shippers (sorry) but it’s also underlining that Mel sees empathy in Langdon that she does NOT see in Trinity. And quite frankly it probably pisses her off more that Langdon got to work on himself for ten months and she’s been too busy with life and work (capitalism baby) to get past her own trauma