It sounds like you are in a situation where you are probably going to be hurt. Whenever someone asks you for friends with benefits they are asking for sex with no commitment. One person always gets hurt. You under different circumstances may find that this would be a good match. However the situation is too volatile for that to happen. Sometimes a relationship fails just because of timing. One person is ready and the other person isn't. Not only is the timing wrong but she is willing to totally disregard the feelings of her partners to serve her own needs. She is a cheater. You can justify it many ways but she is still a cheater. She will treat you the same way if you want a relationship. She doesn't have any boundaries. You need to leave her alone and find a girlfriend that respects you. You will then not start a relationship with trust issues. You have to have healthy components of a relationship and this doesn't have those. Let her move on and you find someone who is nice and everything you want.
please press accept; this is the only way I am compensated