Here are some points based on personal experiences:
1. Is it because I came to your house?: this happens to be like taking the bull by the horn. She loves you, and you do too. Yet. That question comes up each time you make advances
2. Who were you on the phone with?: as much as having a jealous gf is kinda cute, sometimes, it betrays ur feeling. Since u feel she doesn't even trust you.
3. Have you been with someone?: sometimes, we jst nid to put the past behind us..
4.