Yes both of them had previuous romantic relationships. The younger one just would find guys she was attracted to at first but once they started dating she found herself not interested in them for one reason or another and dumped them. I was her first serious boyfriend.
The older one....oh boy she was a mess. I had sympathy for her situation however it was what she did to me after the relationship ended that was really screwed up.
She had one boyfriend before me. Her problems were due to her having seen a movie with a rather traumatic rape scene in it at a very young age she had this huge psychological fear of being raped she was not even capable of consensual without this fear causing her a lot of pain.
When I met her she had been broken up with the guy for seven years and I didn't know she had stalked him for about three years after it ended. She was constantly talking about sex however and writing about it. She also was the first to make our friendship more than just friends by admitting she had deeper feelings than that towards me.
And we dated for about a month and on her first visit to see me she tried to drag me to bed but call it instinct I felt uncomfortable with her and turned her down each time. Then came the day I missed my flight to go see her and she dumped me saying I did it on purpose and just belittled and berated me for two hours over the phone. After things calmed down she got back in touch with me about six months later and told me all about her situation and I was sympathetic towards her and she wanted to get back together but after how she treated me I said no. She stalked me for fourteen years trying to get me to take her back.