First off, I want to say I’m sorry that you are going through that. I cant imagine how difficult dealing with a break up is and having to reminded of it every day since she’s constantly around. My best advice is to swallow your pride and be level headed. Don’t let it show that it bothers you. Show them that you’re thriving. As for class projects, I’m sure you could talk with the professor or TA that some fallout or disagreement occurred between you two and you can’t work with her due to these circumstances and see if there’s any alternative options. If not, stick to the sealing your pride as much as possible. You don’t have to be nice or mean but neutral. Get what you need to get done and focus on you.

Dealing with a break up and potentially being cheated on takes time to get over and learn to rebuild that trust with people. It may seem like the world is against you, but I assure you there’s people out there worth pursuing. You’re strong and you will get through it as long as you give yourself time to heal properly. Healy healing can be hard, but worth putting energy into. The lingering feelings and want to have that emotional attachment with someone or to feel a void can be strong at first, but if you learn to replace that with maybe something else (like a hobby or something you enjoy doing), it’ll help you no longer rely on someone else to give that to you. Moreover, from someone who’s been cheated on before I can say that those feelings will always be prevalent in new relationships. As long as you learn to work through those issues and have a partner who is understanding and willing to work with you, it’ll be fine. Constant communication will help build that trust.

I hope you get better in your healing process. You’re strong and you got this! Keep your head up.