10 points- Will my ex's girlfriend last long?

[Sinny]

My ex boyfriend and I were each others firsts and together for a year and a half before he "fell out of love with me for fighting too much", fights that were mostly started by him. He and I took a break for 2 months, where he blocked me on all social media and other sites before re-adding me and deciding to Skype me again starting last Saturday.

He has a new girlfriend that he's had for about a month now. He's only mentioned her once and said that he is "in a relationship" with her. He doesn't mention her around his friends and never mentions her on Facebook (they don't comment or "like" each others posts/photos).
I don't know if she's a virgin or not (he and I are), but two of her exes are my friends and they've told me that she likes to be extremely touchy and will do anything to get her hands on a man's ****.
She's had 5 boyfriends and a girlfriend (the longest being a month) while my ex and I have only had 1 relationship.

However, he and I have agreed to become best friends and we talk every day for hours. We've only fought once (over his girlfriend blackmailing me), but other than that he knows that he can come to me for comfort, help and anything else he needs.

He told me that he loves me as a friend and that I mean a lot to him. He said that even though he's my ex, if anybody hurts me he'll kick their @$$. He still cares deeply about me and hugged me 3 times on Thursday.

I still have feelings for him, but I don't know if he knows. More than anything, I want him back but mostly away from his new girlfriend. I've become extremely depressed and paranoid over what she might do to him...

He's told another close friend of mine that he's really confused. He doesn't know what he wants and he's trying to find out what he really does want. He texted me "I /am/ happy", but he also mentioned that people have been trying to make him and his girlfriend break up.

1. How can I bond my relationship with him?
2. Will his new girlfriend last any longer?
3. Might he come back to me?

Thanks! And please don't tell me to move on, I want to help this guy.