I’ve been really sad

This is a long one so bare with me....

I’ve been dating this guy for a year he really pursued me. I wasn’t sure about getting in a relationship in the Beginning. But, I fell for him and I have fallen hard.

We really were great in the beginning he would always message me and make time to talk to me even when he had a job out of state. He travels a lot for and would still try to make an effort to be in my life. 3 months in he seemed to be off.

He got sick and confessed to me he got nude pictures from a girl. I decided to forgive him and move on and try to help him while he was sick. For around 7 months he stayed off social media and started to cut ties with some toxic people in his life.

Recently we have had major ups and downs he started bringing back the toxic people and doing his bad habits again. We have never had sex and is always wondering when we will. He’s slowly distancing himself from me and I don’t know what to do. I try to communicate but he will only be on the phone with me for a short time. I don’t understand why he doesn’t leave if he’s not happy.

My friends tell me I need to leave but I don’t want to hurt him. I guess I just love who he used to be. someone give some advice? Help!

Thank you to anyone who helps hope you all stay happy and healthy in times like this.