Dear Megan,
My first thoughts are that your fiance should have shared with you that he was meeting up with this girl. Of course, you are allowed to have friends of both sexes but not if one of them is a ‘secret’. His behaviour resulted in you leaving your joint home and moving back in with your parents. Now you are wondering if you are somehow to blame and you desire to move back in with him.
My advice would be to stay with your parents and begin dating your fiance again, if he still wants you. Talk to your parents in an adult manner. Explain that you are willing to give him another chance but aren’t ready to commit to him fully yet. Ask them for their co-operation. If they aren’t willing to give you any space, then your other option is to move out.
When you are financially independent you can live your life exactly as you want to. That’s a choice you make and it’s one you have to take full responsibility for. Can you handle that?
Best Wishes
Peggy