I'm feeling really confused.

I (19F) recently broke up with my ex (18M) two days ago. On Wednesday night, he shared that he wasn’t in a good place emotionally; he feels unmotivated and has lost interest in school. He mentioned how he sees me happy and it makes him feel bad about himself. I can tell that his situation at home isn't great, and he’s been dealing with a lot. He expressed how he wanted to make me happy but felt he couldn't, and he apologized for it all. I told him that I understood and wished him the best because I care about him. After our breakup, I unfollowed him on Instagram, but we were still following each other on his spam account, where he only follows me and his main account. After saying goodbye, I noticed he had turned off his location sharing with me. Later that day, I posted a light-hearted note on my Instagram that said, "It's her turn now *sighs nonchalantly*." He replied to it from his spam account the following afternoon. I saw his message but didn’t respond until later. We ended up texting back and forth, and I noticed his location feature was back on. He also sent a request to follow me again from his main account, which I accepted because I still want to have a relationship with him. Yesterday, I posted a story as a joke featuring a girl with a shirt that said "World's Best Ex-Girlfriend." He responded by asking, "Whose ex are you?" I replied, "Yours," and he followed up with, "Are you?" I responded, "Am I?" and he closed with, "If you say so." Now, I’m feeling really confused and wondering what he might be hinting at. I’d love to get some opinions from someone else's perspective. Apologies for any typos or grammatical errors; I'm in a bit of a rush!