I'm not going to tell you how to play or who to like, but since the new update is just weeks away at this point, in the last update, Alex admitted he is the one who self-sabotaged any kind of relationship with Jaye, while to her credit, she immediately felt sick and remorseful after how she acted the night of her party. Alex, in turn told her he automatically forgave her for her outburst, and created a 'failsafe' so he wouldn't be tempted to go back to her until he was ready, if ever, to finally have that long awaited talk with her.
She was obviously stung by his admission, but quickly forgave him as she comes to accept it was not the right time for them as a couple back then to try being a couple. They were both different, immature people back then, and certain things happen that lead them to want (provided you are interested in a romantic relationship) to try now, since they are both different people compared to their younger selves. So, its less about toxicity, and more about healing and deciding what kind of relationship you want to have...romantic, platonic, or none at all, though there really is no reason not to have no relationship with Jaye at all unless you just don't like her.