okay time to end this.
ramona IS a slut both in terms of being sexually active and in terms of being unfaithful.
you seem to be forgetting that not only does she just leave relationships at the slightest hint of trouble completely leaving her current partner with emotional baggage. its also made clear that she dated the katayanagi twins AT THE SAME TIME.
meaning she used them both for sex (since she was established to be sexually active by the time roxy came up) and also used them emotionally as well.
TLDR : ramona is a slut in all senses of the word and her whole character arc is her realizing her mistakes and to learn to stay with scott and resolve things rather than running away again.
now PLEASE can we just return to posting images of sluts