Okay, so the beginning of the month I found out my fiancé had been talking to a girl he used to date. he was bringing up their past and making comments that didn't sound "friendly". I comforted him and he said he didn't know why he did that and that I am the only one he loves. he deleted and blocked her, but I still have tendencies to check his phone and Facebook. I have been cheated on before. I love him to pieces and we are trying to conceive but I'm just so cared of losing him after. (my 2 daughters have different dad's because of a similar situation). he's been doing good now and I think things are good again, but I'm scared to let my guard down... help?