Is he playing me on SnapChat?

There’s a kid (15) who I snapped for 2 days. We talked & he seemed cool/nice. I met him over snap. One of the first things he asked me was how old I am/what I look like. Last night, he snapped me & asked if I was alone & I said yeah. He snapped me again & asked if I have ever dated before, had kissed anyone or done anything “dirty”, & if I have ever sent any “dirty pics” & I said no & he said he did. 1 hour later, I asked him if he cared I thought he was cute. he said “It doesn’t matter, I’d like to see more of you though”. I was like “wdym” & he said “more of your body” with a pic of his abs. I said “what do you wanna see?” He said “Your butt maybe” I said that I didn’t feel comfortable & wanted to get to know him more. He said “this could help us get to know each other”. I said “maybe if we started dating”. I asked later if he would consider dating over snap. he said “maybe” so I said “would you date me?” & he said “yeah”. So I was like “so are we dating now” he said we aren’t dating yet” so I said “ok?” He said “I would date you in the future” so I asked how long & he said “maybe like a month”. So I thought, sweet this boy wants to date me but just wants to wait a little bit. Well today I snapped him & he left me on opened. So I snapped him & said “ok I’m confused, you are leaving me on opened & you said yesterday you would date me. We went back & forth (he was saying that he never said that & that I was making it up. I was saying that he did say that & it came from his snap). The last thing he said was “you’re such a liar” then he unfollowed me on snap. Why did he just all of a sudden unfollow me, & why is he denying those things? I also snapped his brother & asked what was going on, & his brother said that he had no idea, he was shocked that his brother would do that & didn’t expect that from him, & apologized for his brother being disrespectful. How can I maybe work things out with him, & at least get him to add me back & be friends?
Is he playing me on SnapChat?
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