Hello..?

So me and this guy I used to date have been talking for a while, and I know he likes me. We talked otp for 4 hours last night. But he hasn't texted me all day. 🤔 And today I just happened to get a snapchat from my friend, who recently moved to Missouri, and it showed the emoji where her number one best friend is the same as mine, so my crush!! I don't know how long it's been like that but today is the first time I noticed, and he hasn't talked to me all day. But I know I'm still his number one best friend. So do you guys think he is talking to her and ignoring me? Maybe he's just busy?