<human>: Give me a shortened version of the text

I have been with this girl for 8 months now exclusively and I am not sure whether or not I should continue to see her. When we first started dating I was aware her ex was trying to get back with her. She was honest that she had sex with him right before we became exclusive when we were just getting to know one another. 

However, it just came out that she continued to see him platonically 3 months after we became exclusive. She just had a hard time hurting his feeling as they were together for eight years before me. For the purpose of discussion can we assume she really was just hanging out with him not having sex. I am certain she wasn't. She was scared that I wouldn't want to be with her if she told me way back when. She has since mustered up the courage to tell him she can't see him anymore but is just telling me now... Months later.
<bot>: Gf saw her ex once or twice a week 3 months into our exclusive relationship and is only telling me months after the fact. What would others do in my shoes as her boyfriend?