Insecure.

Something is wrong with her. ( she thinks ). She has never been possessive about anyone. But why him?
It's irritating if his ex comes online, she does not want him to talk to her, or those girls who flirt with him, pisses her off. Possessiveness is fine but over do it and it becomes a disaster. It probably means she doesn't trust him. But she does, she seriously does. Maybe it's just jealously, but regarding what? He is dating her now. Why do they matter?
She has lost it. Completely lost it.
They are going through a tough time. A really tough one, but then they have always managed to work things out. Always. But this possessiveness has been on her mind ever since she started dating him. It's been 8 and a half months. But still there.
She is insecure, she does show it, but never talks about it. Insecurity is something irritating. She has been through the same, in her previous relationship. Her ex was insecure, just like her. But she never really did care.
Then what's the matter now?
She promises herself, she will won't behave like this anymore. She loves him and trusts him.

She logs in from her account. Checks her notifications, and sees the chat list. She sees him and his ex online. She tries to ignore the thoughts coming on her mind. She sends a "hi" to him. He does not reply. Bigger thoughts start building up in her mind- What if he is talking to her? What are they talking about? Why is he talking to her?
She tries to ignore them. He still doesn't reply. She ends up sending him a text on his number- " Please don't talk to X." She regrets it the minute the delivery report flashes her mobile screen. But he still doesn't reply.
She ends up calling him, ( I told you she has lost it ) hears his voice and gives out a 'sigh' of relief. She asks him, why wasn't he replying on chat, he says he was listening to a song on another website, so he couldn't see the message. She asks him whether he saw her message on his phone, he says "no" and starts checking. After reading it he say,'' chill dude, chill!" and disconnects. She curses herself for doing what has been done.

She again promises herself, she won't do it. She trusts him. ( She doesn't trust herself on this one)