

I’m not sure this even counts because the guy basically said let’s be friends and she has leapt to thinking about getting back together. This just sounds like someone with issues of their own, if dating someone who is obviously unthinking but falls well within the predicted bounds of normal behaviour for a teenager makes them think they might be a lesbian.
I’m pretty sure extensions can request browsing data for some specific URLs rather than every site you visit. If an extension with functionality on one website asks for access to all of them, then yeah it’s a bad sign.