I wouldn't worry about the "rich" guy. He sounds to me like a classic chump in friend zone denial who crossed some boundaries that she set for him. And now that I think about it, it amazes me how many guys here have been put into the friend zone, yet they refuse to believe any woman who claims a guy is just a friend.
You really haven't said much about the other two. I'm still in contact with a few girls I had a thing for in high school, but there's no crush anymore. I'm still in contact with a few girls I "did things" with, but that doesn't mean we still do things.
I know guy friends can make a guy uncomfortable, and that sometimes women do stupid sh*t, aren't faithful and like to have guys orbit them. But, you can't be insecure and/or run for the hills every time you meet a girl with guy friends. I hash these things out case by case. A few times I realized a guy friend here and there was gay, which is why things in the past didn't work out between them even when there was a crush. That may not be the case for you right now, but not everything is always sinister and has to be looked at as such.
She does have a gay friend too! I'm not worried about the gay friend...now one of the friends, I went to school with and I played football with..he's the one she did things with...They have a pretty healthy snapchat friendship, and she has often desired me to become good friends with him, and get in the studio with him. We both do music. Now, the other one, that isn't the rich guy..he's called her at 10p.m. when we were about to ****..she made me answer the phone (this was the first interaction with him). He didn't answer, but we called back. She put me back on the phone, and he was saying "oh that's my girl" when I asked how he knew her and why he's calling...then she (right behind me) yelled "omg what are you talking about." So that night, I was kind of pissed and ready to leave...he then said "Oh I'm playing, I'm trying to find out when your album comes out." Clearly, she's talked to him about me and my music. I ****ed her after that that night, but the next day I brought the issue up and how I felt about it. She called him on threeway...he said "she's just a friend, nothing serious." Now, after that, we'd have our times where we'd be on a date, and he'd call...so this happened like 3 times and pissed me off, so I told her like wtf..is this about to be an open relationship?...she said no, then told me she cut him off 'cause she doesn't want to risk us... A few months later, we're on a date..she's snapping pics on snapchat, and I see him in her recents with the smiley face...meaning they talk more often...I brought that up, then she revealed to me he'd hit her up because he was in town and wanted to take her to get wings..and said "Oh, because you have a boyfriend, you can't go out?" I feel like these are real mind ****s, because she knows that **** isn't cool, and I'm not cool with it, but she's like "Oh I'm sorry, I should've told you, but I didn't want you to be mad, and it wasn't that big of a deal...not like I'm hanging with him, or went out." That morning..I told her off...she ended up breaking up with me..and we spent about 6 hours not talking until she called me back apologizing...then I set boundaries again, but clearly, I'm still dealing with this issue weeks later.