Hi my name is Tiffany and lately I been more jealous then before I can't trust my boyfriend at all and im this is making out relationship to ending up

well lately his been talking to a friend of his to really late and I just don't understand why talk so late or so early in the morning and almost everyday he states to me that there just friends but I can't believe there only friends when they talk so much. I think there should be a limit to text your friends mostly when each have a partner but I don't know if I'm wrong. I need help I need someone to help me get over this bad feeling in me and help me try to fix my relationship