Can people on my facebook know my twitter?

[Ungratefulbait772]

I found out that using two social apps on one phone can link them! Basically I was on my secret instagram account and clicked my followers and found out people from my facebook were following me! WTF. I used a fake name and everything so somehow facebook must've linked my account.
So now I'm worried, can the people on my fcebook somehow know what my twitter is? Because Im using them from the same phone?

PANICKING right now because my twitter account is embarrassing af. I feel like everyone knows what im doing now even while im typing this.
But that's the thing. I DIDNT put any emails or phone numbers. I think its either the phone or IDK.