Search Results: worry about her cheating

Within these past months, I would get hit on by two of my bf's friends. Both were already trying to set up a date and one even send me a picture of him in his swimsuit.

I would immediately tell my boyfriend and show all the message they wrote. I noticed my bf's little reaction (I think most guys would be already upset and he didn't seem; I would be fuming if one of my friends was trying to flirt with my man) and he would often say ''Oh, I'll have a word with them'' or ''Or I guess Ryan is a joker, don't worry I'll speak with him''.

He accidentally left his yahoo inbox open. On there, he was instructing them what to say next to see if I would fall for it or not, to see if I was like the others girls in the past that cheated on him. He kept stating how he wanted to make sure if I was ''wifey material'' or not.

My cousin's husband (31 years old) had been flirting with me, saying things like 'I miss you', 'I love you, darling', 'I have so much attachment with you'... So, I had blocked him but he somehow got my number and asked me the reason behind blocking.
I: I had blocked you because you were flirting with me and I didn't want to make you cheat on your wife.
He: You are right. But I won't cheat on her. She knows me very well. You would die to love me, you would die to get f***ed by me. You won't find anyone like me. By the way, you shouldn't tell her that I talk to you.
Me: Oh, you are scared huh?
He: I am not. She would doubt on me.
Me: Of course, she has a right to know that her husband can be unfaithful to her. Flirting with someone else while being in a relationship or marriage is cheating. You don't know?
He: Having sex is cheating, everything else has no value. Think broad, you won't be happy in your marriage. You have grown up in a conservative family, that's why your mentality is like this.
Me: I would be happy in staying extremely loyal to him, my guy, to be honest!!
He: U would, but he wouldn't be happy with you. All people have done everything before marriage now a days. I have done everything before marriage.
Me: Not all people, and cheating is cheating in every format!
He: Whatever you say. I was angry on you because you weren't talking to me... Anyway, no worries. Going to bed, good nighty darling! 😉

I don't think he would think this broad if his wife was flirting around behind his back. I will certainly tell my cousin about this.

My SO has this best friend, who is a girl. She's nice and all, I guess, although I don't really talk to her as much. She also has her own boyfriend, so on the surface I shouldn't worry, right? However, I do remember that, before my boyfriend and I got together, she used to say that she had a crush on my SO (even while she was/is in a relationship). She doesn't say it anymore, I guess to respect our boundaries, but she has brought up a few things from the past, like telling our mutual friends about the time she told him she had a crush on him, how she played a certain video game for hours so her character could marry his ("my dream has come true," I remember her saying at the time), etc. Whenever my boyfriend is online (we're long distance atm), she shows up online as well.

Now, I trust my boyfriend, but I'll admit I get insecure. Thing is that my past relationship broke apart because I found out my ex was cheating on me with his best friend, who was married. My boyfriend doesn't flirt with this girl, but he often doesn't reply to my messages for quite awhile when *she* is online. Right now, I'm waiting for him to message me back--about forty minutes later. Yesterday he admitted that sometimes he forgets to message me back because he "absentmindedly" thinks he had already replied to me.

Anyway, I'm sorry about my jealous rants. I don't know what to do here. Should I bring it up with him and ask him why he ignores me?

But the main question is, how would you feel if your SO had a best friend of the opposite sex? What would you do if you were in my situation?