Drifting away from love? :(

I've been in a relationship with my boyfriend for four months, but we've been exclusive for over a year. He confessed his love for me more than a month ago, but I wasn't ready to respond until last week, just a day before a huge argument we had. We tend to fight often, but after this last confrontation, things feel different—I can sense a shift in our connection. Last week, we had one of our biggest disputes, sparked by me jokingly touch another girl. Being bisexual, he became really upset about it, and my jealousy towards other girls escalated the situation. He repeatedly told me he was done and asked me to leave when I got to his place. He insists he wasn't suggesting a breakup, but it certainly felt that way, especially since I had to clearly state that I didn't want to end things. After that night, we haven't discussed the argument much, aside from him expressing that he feels I don't care or put in enough effort. It saddens me to hear that, and I can partly understand why he feels that way. He’s been saying he loves me for a while, and I only recently found the courage to reciprocate those feelings, but then we fought, so I haven't had the chance to say it back. Since the fight, there’s been a noticeable distance between us—some days are fine, while others really highlight the gap. He believes that eventually, I'll show that I care more, but I'm worried he might no longer love me. He mentioned it once while I was crying, but that was the last affirmation I had. I feel disheartened at the thought of him falling out of love, as I know that’s usually irreversible. I’m unsure if he still loves me or if I should bring it up or just give it more time. It’s puzzling; he's not as verbally or physically affectionate as before and seems to get annoyed with me more often. I just don't know what to make of it.