Search Results: boyfriend flirt with my girl friends

So, my best friend, let's call him Alex for now. I came over about 3 months ago to hang out after I was done my 2 weeks after coming back from my time. Alex explained to me that when we went to the beach together last year that Sam and he were flirting at the time, I was distracted, but he said I had told him that Sam had a boyfriend and not to get himself in trouble.

Long story short, apparently, when I went to get something from my car while Alex was in the water, Sam felt him and grabbed his Cough. He claims he was sure it happened and that he couldn't be making this up. He only brought it up to me recently becuase he was shy about it. Sam never said anything or acted like anything was up that day.

- One, Sam has been in a relationship for almost three years now. I know she loves her partner, so I'd be surprised she'd throw all that way so easily. However, she has a history of being reckless, so I don't really know.

-Two, Alex has a history of sexual misconduct. Sometimes, I genuinely think it's he doesn't realize how uncomfortable his statements can be. He recently said he wanted to watch me and another girl have lesbian sex for Christmas, and I told him that made me uncomfortable and that I had a boyfriend... who he's met several. He's also joked about taking my virginity when I was a little younger.

- Three, there was no one else there to confirm his story

I personally, I always think you should believe the victim, and I know male sexual assault gets ignored, and it's a big problem. He's my friend, and I care a lot about him. I've noticed since that day she's been more or less very cold towards him, even when he's the one being friendly. So, I have no idea what to do.

I have already met my soulmate who i can never be together with and we aren't in contact anymore. He helped me and i helped him and our roles in each other's lives are over. So i don't have to worry about "the one"
The biggest deal breaker in a relationship for me is cheating and i have always advised a break up if your SO cheats. Cheating is the same reason why i am scared to be in a relationship too. It seems that many people here and irl supports cheating too. I had a guy tell me he will pour sulphuric acid on to my face because i asked a girl to break up with her cheating boyfriend. I know a female user here who everyone compliments on how she's such a submissive good girlfriend while she's flirting and sexting her guy friend. Even some of my friends in committed relations talk about new crushes and flirting with hot losers.(They say it's for fun)
Whenever i express my hatred towards cheating, people ask "Did you get cheated on or something?". Obviously i did not. But i feel like what they're saying is i don't have the right to be upset about cheating.
Anyway i got a player guy who have always wanted to "date" me since i am not easy and i am 99.9% sure he will cheat. So if i date him and when he cheats, i may finally be able to get rid of my fear. Once i become immune, i believe that i won't be always thinking if my future SO (someone i love) is cheating and even if he is, I would be used to it.
You would feel like i am being a hypocrite rn so i will stop expressing my anger towards cheating and such questions from this moment onwards. And yes i am alright being a miserable girl who would probably be pitied on (Ik i need help🤷‍♀️).