What to do??

Been dating my girlfriend for 10 months. In love like no other I have been separated pending divorce. I have had issues with my girl taking Hours to respond to text message and have always felt I am chasing her. I have also felt when we are not together she has a separate life. A few.months ago she asked me to call her after I put my kids to bed. I did so and after many attempts with no contact from her I was concerned and checked by her house. I observed she had gone out. After more attempts I fell asleep and was awakened at 615 am by a phone call. I asked what was up and she responded she had crashed out for the night. Then when I asked where her car was she became defensive and asked if I was tracking her. I explained I was concerned. She said she had her phone in her purse and didn't check it until she took a cab home from the restaurant she said she and her friend went to. how do u not check your phone for 4 hours. She said she saw I called and decided to shower then call me. She said she fell asleep. I don't trust her. Any opinions on this? 3 weeks ago I was on vacation with my son. I forgot my phone one day and didn't have contact with her. in text she accused me of putting her to voice mail then she said she was going up to my wife's house to ask where I was because she was concerned she didn't here from me . Then she said how could I treat her the way I was. When I got back I explained I forgot my phone. She Sai d she was exhausted and didn't want to talk. I broke it off the next day over the phone. I feel bad the way I did it but I was so mad. Any thoughts. By the way we are both 43.

The issues I have are she doesn't trust me for some reason. Be it I'm only separated etc.. the threat to go to my wife etc. The constant assumption that I'm up to something. That with the fact she went MIA puts me in a insecure place.

she doesn't trust you and you don't trust her. Maybe you two can be honest with each other. She was checking up on you when she went to your wifes house. You were checking up on her when you went to her house. Its silly for her to accuse you of checking up on her when she did the same. Maybe you two should find the source of your trust issues and fix them.