Her bf told me goodnight?

Okay, so I’m in high shcool and short little backstory, I’m not really close friends but food friends with this one girl and around Christmas time I was hooking up with this boy a lot, I put him on a pedestal and I really liked him. I knew he was just using me for my body though so I eventually did what was best for me and moved on since he was a player. I told this one friend about how I had hooked up with him and after me and her stopped seeing eachother in classes anymore, I noticed they were hanging out a lot on snap map, she used to snap me in his house to rub it in my face but I genuinely didn’t care Bc I moved on. Now, they’re dating and he started hitting me up again and he’s trying to have conversations with me and itsjust really odd, last night he said goodnight to me and I feel like it’s not my place to say anything Bc he’s not really cheating and she also fucked me over getting with him in the first place. Thoughts?