I am completely lost and alone right now, I know no one can really tell me what to do but I need to get this off my chest.
Some background: I've been with my fiance(?) for nearly 6 years, we have a beautiful DD who turns 5 in June and we're meant to be getting married in September after a 3 year engagement. Things haven't always been plain sailing. We met while he was still married, fell in love and pregnant very quickly, I was made redundant while on maternity so we moved to be closer to his family, it took me 4 years to find a job which I left in February after a year because I was struggling really badly. He has 2 children from his previous marriage, he works away Monday-Friday and I don't really know many people where we live and so during the week it's mostly just me and DD.
So we went away last week on a short break. We came back last Friday and he went out with his DS but while he was out I found some messages on his work phone between him and another woman. They weren't explicit or anything just arranging to meet a few times, although he always then cancelled. When he got home, and I eventually let him in, and I calmed down enough to talk he has promised me he never met her, hasn't cheated on me and it was just texts, nothing else but I'm just not sure I can believe him. He says he started talking to her on a chat site because he was bored and lonely while away from home, he says it was just stupid and he never planned on doing anything with her.
He has gone to work today and I've told him I don't want him to bring his kids here at the moment so he will be spending next weekend with them at his Mum's and I won't see him until now for nearly 2 weeks and I've asked him not to call me so that we both have time to think about the situation.
He says he still loves me and wants to marry me in September but I just don't know if I can ever trust him again. I don't want to be a single mother and I don't want my DD to have to go through life without her dad but I just don't know if I love him anymore and I don't know if it's enough for us to stay together.
On top of everything I suffer from depression, anxiety and insomnia and my DD has chickenpox and I just don't know if I can cope with any of this.
Any friendly advice is much appreciated.