Crushes and moving on from ex boyfriends?*long but will give everyone points*?

[Jess]

Okay so me and my ex broke up almost a month ago...2 weeks ago he got a new girlfriend, even though he apparently still has feelings for me....He is lying to her I assume since we have mutual friends we hang out and he still flirts with me ect. Hugging me. I met a boy on the weekend and we flirted and held hands and hugged a lot. I developed a little crush on him but even though my ex is even dating someone new , I felt guilty. I want to talk to my crush but feel bad about it if I do :c It also doesn't feel the same or right even though I very much like him. I want to move on but can't. my ex is trying to hide his new gf from me.I am also scared to message my crush on facebook...thinking he is just a flirt....
I don't want to be with my ex again,that isn't my point of topic.