Did he lost interest in talking with me?

So I met this guy online and we've been talking for like a month, tbh we talked dirty stuff andI told him we need to stop cause I don't wanna lose him I wanna keep our friendships, and told him lets just be platonic friends so I'm not afraid of getting attached , he agreed and we kept talking about other stuff, then he told me that he started to trust me and showed me himself i showed him myself too. He used to be a faster replier but since yesterday I felt like something has changed, he took hours to reply , today too. He used to tell me that he sleeps early around 10pm, yesterday I saw he was online until 01am. Today too he is online and take a long time to reply. I feel like we lost the good vibe in our convos, I don't know what happened, he may found a better friend than me, i am a person who hate late replies and make me lose interest im that person in any kind of relationship.

Did he lost interest in talking with me?
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