How to put up with a girl who clearly likes your boyfriend?

[M]

I've been with my boyfriend for 7 months, and things have been wonderful. We both go to the same university, are 22 years old, and serious about our relationship. One of my bf's closest female friends is also a former love interest, but things didn't workout between them due to religious differences. My bf still talks to her - and I have expressed discomfort in regards to this. Since then, he always asks me if I'm fine with them hanging out together, he's given me the privilege to check his phone/Facebook IF I feel the need to do so (But I havn't taken that up, I'm not the snooping type).

So given that, I think my boyfriend is relatively trustworthy. What bugs me however is how she behaves around him. It's clear she still likes him because ever since she found out about our relationship she has been behaving weirdly around him. She's constantly commenting on his Facebook page & pictures as well - which annoys me and causes me to get moody with my boyfriend. How do I deal with a situation like this?

[Thomas]

I wouldn't become that type of girlfriend that gets paranoid because you end losing him

[princess]

First of all if he's in a relationship I don't understand what's the need to be around an ex he dated? Don't let her step all over you if you don't like the fact that there still hanging out communicating put a stop to it cause its clearly Gona get worse if you don't you guys been dating for 7months shouldn't you two be able to tlk to each other? Man up lol if he truely loves you he'll stop but if he puts excuses not to stop taking to her he prob still has feeling for her