Trust problems

Hi...first off im 25 years old, and my girlfriend is 24. me and my girlfriend maintaining a long distance relationship.my girlfriend and I have been together for almust 2 years now and things are going well.We're both pretty serious about each other.me and my girlfriend both use Facebook. she log in to my facebook sometime and i log in to hers.i have no prob she use facebook and talk with her friends,i let her use facebook caz.. i trust my girlfriend. on her friend list thear is a guy who she told me about.my gf told me.that he's is a good friend of her and they both share music and stuff on facebook. recently when i log in to my girlfriends facebook account,i saw that she and that guy friend of her has been chating. so.. i wanna to see what they chat about. while im reading the conversion i saw that guy friend of my girlfriend says he loves my girlfriend and he miss her all kind of things that really hurst me,funny thing is this guy know that me and my girlfriend are in a serious Relationship.but for all the things that guy told my girlfriend she didnt really reply for any of thoes.normaly me and my girlfriend talk on skype.when something happen like this my gf always tells me.but this time she didnt said a word till i ask her.i was really angery.after i askd my gf what it's all about she laugh and said sweet heart he was just joking and they are only good friends.i know that they are good friends,that's way i let my girlfriend talk with him sometime caz.. they are good friends.but i never know that they talk like this.i feel like my gf lie to me,and hide it from me. it's okey to have A friendship.but when someone say i love you and i miss you too your girlfriend.in my mind that is not normal.then they have a A Special Bond.Dont you Think? My mind is @#%%# right now.i dont know what to do.after this happend me and my girlfriend we had a big fight and we didnt talk for 5 days now.please someone help me or give me some advice. or maby im jelous caz.. someother guy telling my gf i love you? what u guys think? is ther something bitween my girlfriend and this guy or is thear nothing? Is It all In my imagination??Please help me with this prob.

hey bro..... frst of all, long distance relationship not go well because evrybody want his gf/bf live front of the eyes.....this kind of problem spoil the relationship..... the solution of this problem is this......that boy is doing flirt with ur gf......if u have trust on her than 4get all this...... & talk with her again..... & after that also look at on her or her friend..... if u find ur gf is doing flirt with him..... than leave ur gf 4ever........ al d best bro......

Every body has a right to choose, first I will say dont share your accounts credentials, this is not a good practice.If your girl friend love you no matter who ever try her she will come to you, and if she is in a dalima, then any unhealthy behaviour from your end will ruin the relation. It is good to express your possiveness, but not your doubt.