I (16M) called my boyfriend (17M) a greedy pig mistakenly during a match in Fortnite.

To give some background information we play fortnite nearly everyday with occasionally my brother (15M). The three of us were playing a fill in squad and during the match I came across a chest. I’m very passionate about my loot. It can range from anything to weapons to ammo. I didn’t realize my boyfriend was following me from behind while I was looting. I wasn’t even aware anyone was behind me. This naturally made me upset when I saw him take my ammo and I called him a greedy pig. I genuinely thought he was my brother because he’s constantly stealing my loot and kills. I didn’t realize that it was my boyfriend until a bit later and he was silent. I tried to explain myself to him but he refuses to talk to me. What else should I do about the situation? He’s my best and only Fortnite duo. I can’t imagine not playing with him anymore.