I (22M) am exhausted by the double standards in my relationship with my girlfriend (21F). Is this worth saving?

I (22M) am facing serious difficulties in my relationship with my girlfriend (21F). We recently completed 3.5 years together, but the situation is getting worse day by day. I am physically and mentally exhausted, and I can’t think straight right now, so I need an unbiased perspective.

​To give you some context, we haven't followed each other on Instagram for a few months due to such previous incidents

​The Recent Incident

Yesterday, she went through my phone. I have a female friend, let's call her "X," who I have known for 10 to 12 years. A few months ago, my girlfriend demanded that I block X out of the blue. I did it because she created a huge scene about it. Recently, X made a new account and sent me a request, which I accepted.

​My girlfriend checked my following list and saw X there. I had already deleted the chats because I knew exactly how my girlfriend would react if she saw them. When she found out I had accepted the request, she threw my phone and hasn't spoken to me properly since.

While she reacts this way about my childhood friend, here is what has happened on her side of the relationship:

​The Cousin Incident: About a year ago, a distant cousin of hers literally asked her to sleep with him. Instead of blocking him immediately, she ghosted me for two days so she could talk to him. She went to meet him, though she claims she didn't actually meet him. After I found out, I asked her to unfollow him and cut contact. It has been a year, and she still hasn't removed him.

​The Manali Trip: She recently went on a trip to Manali with her girlfriends. Weeks later, on my birthday, I wanted to see if she had posted a story for me. Since we don't follow each other, I checked using my sister's phone. I found out she was following boys she met on the trip. She admitted that one of them tried to kiss her while she was drunk, and another one asked her out. Despite them disrespecting our relationship, they are still on her following list.

​When I confronted her about these guys, her solution was to remove my sister from her followers so I couldn't see wh she was doing. We had a huge fight, and she effectively ruined my birthday.

​The Current Situation

We booked an Airbnb for two days to try and spend time together. The first day was good, but after the incident yesterday with my phone, she turned hostile. She refused to let me touch her, saying, "I will scream if you ever come near me." She verbally abused me, saying things like "Maa chuda tu aur teri dost" (Go screw yourself and your friend).

​I am so drained. Is this relationship worth saving, or am I wasting my time?