What would you do??

One of my homegirls has sex with so many different men (not judging) and she treats them all like shit. She became Facebook friends with a man who I was social media friends with for years but I never said anything to him because he was in a relationship. His relationship ended, they became fb friends and eventually started fucking. I feel some type of way because he is a good man and I always liked him. He’s always commenting and conversing with me to the point where I want to get to know him. All of a sudden my homegirl is back on him although she has several ho’s. I feel like she’s only doing that because she sees us interacting a lot more than usual. He made a comment the other day under a status she shared about men choosing the wrong friend “sometimes you could be fuckin with your friends future husband..” and of course she comes responding saying “that’s why we tell each other everything..” and at this point I’m annoyed with her fucking with men who are more fit for me! It’s only about sex with her. She never gets taken out or anything. This is literally my third crush she’s fucked. Idk if I should check her about it or what and yes she knows beforehand who I like! Also wondering if I should pursue him...... but Idk because once my one of my homies touch you it’s kind of gross to me! I’m everywhere with this!!!!!