Is it okay to flirt with my ex teacher?

[Ambitions]

So.. He used to teach me before I got suspended. I used to be troubled and kinda bad. He always tried asking me to stay with him alone in the room so I "wouldn't get caught" when the teachers kicked me out, but he tried to hide his desperate manner and he blushed a LOT. I refuse anyway so I won't bring him trouble.

Everyone says that he likes bad girls and I'm the only one at school apparently who does very reckless stuff.

He's not married, nor engaged, but he has a gf. And all my classmates told me he was so upset when I transferred to another school, and he asked a lot about me and tried to sway my friends into convincing me to come back and stuff like that.

Its been like 5 months. Recently, I found him in my friends suggestions on facebook, but we had no mutual friends so why would facebook suggest him I don't get it.

I wanted to send him this message:

I literally just found you in my suggestions. Isn't it weird how we have no mutual friends?

Hi, "Joey." I think its okay for me to call you that since I'm no longer your student.

Lmfao, have a good day and don't worry, no one will know your account, I'll keep it to myself.

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His name is Joseph but apparently its Joey on Facebook. I'm not scared since I'm no longer his student, but he's very fearful he could show it to the principal or talk to my sister about it since she didn't get suspended and he's still her teacher.

I don't want any jokes or troll answers, please be honest..!!!! thank yousss

[MoreM]

How old are you? If you are of legal age, I don't see why not.