Was it really wise to say to him that there is nothing more to say when he sent a text saying you need to talk?
If you want him back, get together again, it is important that you keep communication channels open.
You both have issues, you both made mistakes, you both need help, have you made a counselling appointment yet? There is usually a long waiting list there, and most counselling is expensive too, the quickest way to get into counselling is via your GP and its free, for a few weeks only, you may need longer though. Do you know what counselling involves?
Re your man, you suggested AA, thats cool, but some people dont get along with AA, just a warning, AA do the 12-step programme, not suitable for everyone, but there is other help available out there which town/city, whatever do you live? I can send you a few contacts for organisations.
I feel there is still a deep bond there between you too but at the moment you are both traumatised and feel abandoned. There is lots of help out there and you both can support each other too by sharing your experiences, you tell him about your counselling and he about his AA meetings or whatever, and you will learn from each other and maybe grow closer in the process or at least remain good friends.
Not sure how you feel about moving in together again, maybe that bit of distance is needed at the moment, but keep meeting up, talking and texting, you say you need someone to be there for you at the end of the day, so maybe you should talk on the phone or at least text a good night message to each other, would that help? I am only making suggestions here. But a complete breakdonw of communication is destructive if you are hoping to get together again, no matter how upset either of you is talk calmly, meet in a neutral place (or over the phone), you can hold hands while you say something like 'I still love you, but you hurt me so deep...and talk about whatever it is'
its also possible to hold hands when you are on the phone or texting, imagination works wonders,try it maybe?
I know maybe some of this sounds insane to you and everyone else in this forum but: I dont suffer from insanity, I enjoy it

))
Can I suggest that you begin by reading a book by Louise Hays, You can heal your life? It is one book that is easy to read, and a good way to start on your journey to recovery, you need to learn to respect yourself, you said that you have been hurt in the past, why do you always fall for problem guys? Lots of things there for you to work through and getting to know yourself better, not easy but you can do it, its possible, you dont have to be the victim forever.
Comforting hugs
Karen x
Challenges can be stumbling blocks or stepping stones, it depends how you view them