He wanted to 'step back' have I got a hope in hell to get him back?

Hi Guys I'm new here and this is my first post.

Just over a week ago my boyfriend of 6 months said he wanted to take a 'step back'. he said he wanted a relationship when we got together and was very full on in the beginning, making future plans with me (e.g. inviting me to a friends wedding a month in advance)introducing me to his friends and family and wanting to spend a lot of time with me even though he was and still is a workaholic. now though, he is not so sure if he still wants a relationship.

I am in love with him and he knows it, he had not yet said it to me and i was ok with that. he did tell me he cared for me.
he and i both have been married before and both of our partners cheated on us and left us for someone else.

When i asked him about the 'step back' he said he did it once before with his ex wife before they got married. i also asked him to please not leave me hanging and hopeful that he would come back to me if he did just want to break up as that is what my ex did. he re-assured me that he honestly did not know if he wanted to break up for good or not. he also changed his facebook relationship status to 'it's complicated' not straight to 'single'.

Anyway, he was sent away with work right after he told me he wanted a 'step back' and won't be back for another week or so. he was texting me the first 2 days then i heard nothing for a couple of days. i wanted to text him but my male friends told me 'do not under any circumstances text him' so i didn't. two nights ago he saw me on facebook chat and we had a brief superficial conversation. he ended it by saying he might see me online the next night. the next night, which was last night, he was not online but he sent me a text to ask how i was. he caught me in a bad moment and i confessed i was not well. it had nothing to do with him though, i was having a problem with one of my friends. he sent a few more texts back and forth wanting to help me out and then in the end he just called me to talk to me about it. this morning he sent another text through to ask how i was doing and has sent several more since.

I can't figure out how he feels about me, i know he cares about me but i can't figure out if it's enough to want me back and it is driving me insane not knowing if he will come back to me.

did he just take the 'step back' because he was genuinely scared or is it broken off for good?

what are my chances of winning him back and what is the bast way to win him back?

when he gets back from his work trip, should i initiate the topic about whether or not he has made his decision or should i just wait for him to bring it up?

i'm so confused, hurt and sad. i just want him back!

sorry guys about the length of this and that it's a bit disjointed. any advice will help. thanks :-)

Trinny x