Well feeling like this is extremely common is love. When you love someone a lot and you don't like anybody talking to them. You see love is a very beautiful feeling, it makes you laugh at times, it also makes you cry and something you also feel angry. This is what love is all about. It is the feeling when you don't want anybody to touch or talk about something or someone you love. You feel as if they should only and only talk to you and no one else.
Well this is another stage of love. You have the person you love and he loves you in return too. But still you don't like the idea of him/her talking to other people. It is generally due to the fact that as people are scared of losing someone close to their hearts and someone they love so much. Will in such cases it is very obvious to feel like this. So just relax its normal to feel like this, this shows that you love him/her. But make sure this doesn't effect your relation because at times this can also prove to be a reason for a breakup.
Well this is another stage of love. You have the person you love and he loves you in return too. But still you don't like the idea of him/her talking to other people. It is generally due to the fact that as people are scared of losing someone close to their hearts and someone they love so much. Will in such cases it is very obvious to feel like this. So just relax its normal to feel like this, this shows that you love him/her. But make sure this doesn't effect your relation because at times this can also prove to be a reason for a breakup.