I have found explicit gay videos on my sons computer.

I (39M) have found explicit gay videos(not his own) on my sons (18m) computer. Its a throwaway account since my son has access to my main reddit account.

I needed a pc for work related things and i asked for my sons pc to finish my job. my pc is being repaired bcs it has bluescreen problems.

When i opened google chrome i was slapped with more than 10 tabs all were gay videos and I couldnt find the strength in myself to do my work. I have nver thought that my son was gay/bi. He likes martial arts and preparing to go a sports university. we are from a homophobic majority country so i could see that him not being able to open up but i still feel like i have failed as a father. After i saw those internet sites i just closed the pc as if i havent even touched it and rushed outside. My wife stays with her parents because her mom just got a minor operation. I dont know if she already knows or not but i dont want to talk to her about it and disclose my son. It has been 30 mins since i am out and i dont know how to face my son. I dont want to force him to come out but i want to have a conversation about it. I have no problem with him being gay or bi. But as a father i need to make sure he is safe and happy. I really need advices about how can i open the topic and how can i make him understand that i love him no matter what. he is preparing for university exams this year and i dont want to put him on more stress.I am still out trying to collect my thoughts. I am really sorry if i said offensive stuffs but i have never thought that i would talk about lgbt topics online.

I can really use any advice.

EDIT: I kind of messed up by not closing the tabs while rushing outside. I found my son crying in his room. Turns out he wanted his pc back after i go out thinking that i ve finished my work and saw what he left. He thought i was angry at him and didnt accept him. I came back home with some beer and fried chicken as my reason to go out and i kind of sticked to my alibi and told him i was out to buy beer and chicken but i also needed to clear my mind. I told him i had no problems with his orientation and yes he is gay. His mother also has no idea but he told me that he came out to my little brother and he is also supportive. He told me that his uncle has suggested him to not come out until he has his economical freedom and this makes sense to me too. He also told me that he called his uncle after seeing the tabs left open and my brother suggested to pick him up so my brother is on the way. I liked the one comment about a little lighthearted prank but i couldnt find myself pranking my son that way so we are kind of pranking my brother with my son by not telling him what happened until he arrives. My brother will come to pick up him but instead we will celebrate today. and my son can come out to his mom whenever he wants. But hearing that my brother was by his side all this time made me kind of relieved and i am proud of both of them. Thanks y'all for your kind words and advices. I geniunely wish you all wonderful support and acceptence from your peers and families. <3