<human>: A little background: I just moved to a new state about 5 months ago. I've become very close with my neighbors: roommates "Smith" (31M), "Daisy" (26F) and "Jordon" (21M), who live in an apartment near mine. Jordon is in love with Daisy, and Daisy tells Jordon she feels the same way, but is in no place for a relationship right now (Daisy has some addiction problems and tends to choose older men who are usually picked because they supply the alcohol or drugs). This has been going on since I met them a few months ago and Jordon refuses to give up chasing Daisy, who is very beautiful and sexual and charming. 

Recently, however, Daisy has been coming home from work acting like a giddy schoolgirl (her words) and claiming to have fallen in love with a coworker (41M). Jordon has been moody and his roommate Smith (who I'm dating) tells me that the last time Jordon came home, his arms had cut marks on them. We knew Jordon cut in the past, but we haven't seen any evidence that it was still happening/ happening again until now. 

Right now, Daisy and Jordon aren't really talking, so we can't ask her to talk to Jordon. Smith has known Jordon only a couple months longer than I have and isn't as close to him as I am (Jordon tells me everything and says that he wouldn't be where he is in his life today if he didn't have me to talk to). I want to talk to Jordon and help him any way I can, without making him embarrassed or defensive. 

Has anybody been in this situation before? I need all the advice you can offer!

My phone is dying and I may not be able to respond to questions until tonight/tomorrow.

Condense the text into a few key points
<bot>: My (20F) best friends (21M) love interest (26F) recently fell for someone else after months of leading on my smitten best friend. How do I approach best friend about his recent cutting?