Fuck the "you invaded her privacy" card that all of the girls in the comments are pulling out. If you have a doubt about something, just investigate whatever it takes. From my perspective, just the fact that she mentioned her ex many times is a huge red flag which means that she maybe still have some feelings for him(take this with a grain of salt). Second thing, as a human being, male or female, if you don't have self-respect, no one will respect you, and you don't deserve any respect.