You must be thinking about doing it…

Block and delete on everything.

Cease all communication. Permanently.

Also, why are you entertaining someone with a girlfriend?

He is an ex. He has a girlfriend.

Move on. Block him.

Stop talking to him.

Stop cyberstalking him or the both of them.

I think you want him back.

I think you are hoping that by sending her things, that they’ll break up and he’ll come back to you.

Just leave him alone.

You’ll regret it if you don’t