Need advice with my girlfriend!?

So I've been dating this girl for a little over a month. She is 17, I'm 18. She was in a relationship prior to me for 9 months. I REALLY like this girl, but I'm worried.

My girlfriend is a junior in high school, im a freshman in college

She still talks to the guy she used to date in the mornings before she goes to class, and I can't help but worry she feels something for him or still thinks of him. She also checks his Instagram. She says she loves me but I can't help but worry about her former boyfriend.

For the record, he dumped her.

Do I have a legit reason to be worried? She says I have nothing to worry about and I do trust her, I just can't seem to work this one out with myself

She also knows how uncomfortable I am about it.

?2015-02-06T05:54:04Z

I don't blame you for being worried, if my boyfriend talked to other girls and stuff, I would worry too. But you trust her, right? Sometimes girls just check their ex's things out of curiosity. (I check my ex's stuff but I would never in a million years take him back, I have absolutely zero interest in him.) If this really bothers you, then you need to talk with her about it. If she loves you, she should respect what you want.

Anne2015-02-06T08:39:43Z

You could ask her in a kind way if she would consider not talking to him so much because its bothering you. If she doesn't care about how you feel maybe she's not worth it.