You have a girlfriend and if your girlfriend talks or messages to some other guys you get angry, you feel insecure and you feel tremendously bad about it, this problem is there with almost every guy who loves a girl. Now, what you really can do about it?  first of all, let me clear this to you that you still don't know what love is, the moment you say you love a girl, you are not actually loving. what you are doing is you are trying to possess the girl, She is not a property to possess, you are trying to reduce the being to a thing, this is utter stupidity.   This shows the lack of trust you have on the girl, so if she is talking with someone, you are trying to control her. this is the biggest danger, the more you try to control your girl, you will lose her.  Love is not about possessing somebody, love and possessiveness are two different things. love is a state of giving where there are no expectations, no girl will ever miss you if you are such a beautiful giver, when you truly offer everything to your loved one without any expectation the girl will chase you like anything and she will never leave you.  Want to really understand what love is all about and how to get over with this jealous problem?  Listen to Guru Mithreshiva and Let the love showers!