My friend and boyfriend used to hang out a bit because her brother plays footy too. She flirts with guys so much and kept hugging him 24/7 but only behind my back and they used to hide stuff from me and she used to go to his a lot. Anyway, he blocked her on FB and they didn't talk for ages. But tonight, they talk again, she tells him that apparently I was going to a girls house tonight and there was gonna be drinks and weed (completely not true!) and he believed her and I said to him, "why are you believing what she says" and he said "why would she lie" and I cracked it because he's saying I'm lying and he's trusting her over me. His girlfriend. And then he adds her back on facebooka me the first think he messages her, is a heart. Than she sends one back. (Btw, she started dating his best mate 3 days ago.) and she posts on his Facebook "happy late birthday!!!!!" His birthday was 2 months ago. I feel like they are doing it on purpose or something. Idk what to do :/ thoughts?