no, she is trying to be funny. it may or may not be true, but her goal is to be funny. the guy is not insecure and he probably fingered half the girls there as well. she is saying it on video, so it's an attempt at saying something funny. she is likely loyal to him and speaking openly about their past is how you remove uncertainty and move on. if she went, without addressing the fact that a bunch of exes are there, he'd probably spend the rest of his life thinking about what was said to her and what she said. speaking openly and honestly is how you have a healthy relationship you are a syrian refugee and you'll, at best, land a mentally ill wife you'll spend your days controlling because you're insecure you'll lose her, and those are days wasted on nothing
Gadsden