I’m gay but my family have no idea!

Hello! This is my very first time using Reddit and I’d like to talk about something very sensitive and personal. First of all, I’m gay and anybody who is homophobic or is going to leave ignorant comments under my post will be ignored and blocked. I’m a 22 year old male who is gay, living in the UK. I was born and raised in the UK but my family is originally from Turkey. I want to make this simple and quick. I came out to my best friends and they’re very accepting and supportive of my sexuality which I’m very grateful for. I’ve also told a couple of my cousins who I completely trust and am very close with. However, my parents and other family members have no idea. I know a lot of you will say things like ‘just live your life’ or ‘this is who you are. They have to accept you or move on’ but it’s really not that simple. My family aren’t religious at all but they’re cultural and there are way too many people in my family. I’ve met a guy in 2014 and we’ve been dating for three years now. He is my first and hopefully last boyfriend and I’m just so happy with him. I’m scared to know what my family will do. They will NEVER accept or tolerate homosexuality. I’m just so sick and tired of crying myself to sleep. I want to live my truth in the future but for now, I can’t and I just don’t know what to do. I’m scared that my family will do something as far to end my life (honour killings is common in some parts of turkey) and I know my family are loving, good people but I just don’t know. There’s so much on my mind but I want to keep this post simple and short not to tire or confuse anybody. What should I do? I’m legit shook for my life