I don't want to downplay the situation but I feel like it's your responsibility as an adult to disengage from situations like this faster than she did. Hindsight is 20/20 I guess but the whole situation seems to have been really mishandled (and that's a feeling I'm getting from a court complaint from her side). Again, I'm not saying she asked for it or anything, just that pursuing an ongoing relationship might not have been the best idea.
In any case, that seems to be a terrible working environment. I also find it kind of ironic that the co-founders of an inherently social app like Tinder appear so poor at handling interpersonal/romantic relationships.