<human>: Me: 21 yrs old, male. 

One of my current close close friends and I had a "thing" a while ago, we didn't have sex but we hooked up in other regards for about 2 months. at the end of that year she lost hers to a senior and i was kinda devastated as i had fallen for her completely. 

a few years went by, i got over her somewhat and stopped being depressed. she found a boyfriend and they have been dating for almost 2 years. about 9 months ago another guy (we'll call him bob) who she met over the summer started hitting on her pretty hard (he knew she had a boyfriend) he even went so far as to literally tell her she should dump her current boyfriend and be with bob, in a way that most of our friend groups thought was pretty uncool.

her long term boyfriend is leaving at the end of this school year and they have begun their separation and are currently in an open relationship, she is also currently "kind of seeing" bob. my problem is that for the past few months I've been having some pretty strong feelings for her also. We're very close, and frequently stay up late talking or just hanging out (but not in a best friend whom she tells everything way). anyway my whole friend group knows we used to hook up and that im really into her and also none of them like her long term bf or bob AT ALL and are pushing me to make a move on her. the one problem is she is and easily overwhelmed person who often has trouble with emotions. 

I also don't feel like i should bury my feelings. I'm a very emotionally stable person, but what i feel for her isn't something I've felt about a lot of people in my life. I honestly just want whats best for her and for her to be happy. so here's my question: should i tell her how i feel even though her situation is already really complicated and she is easily overwhelmed, or do i risk being "frienzoned" or overlooked by this girl, because it would be easier for her? how should i approach this?

Could you distill the essence of the text into 1-3 sentences?
<bot>: close friend who used to be more is in an open relationship and also "kinda seeing" another guy neither of whom our friends like . i have pretty strong feelings for her, but she is emotionally unstable. what should i do?