When a girl has an attraction to a guy it is very hard for them to not want to be around them, this does not mean that they will be right in his face but they will in fact want to be in the same room as him or near him.
There are many other signs but this is the more common sign See more questions like this: Does my girlfriend like another guy?
Everyone is different, but body language can give away an obvious attraction.
No, that is not true in any type of situation in regards to a girl loving you making it OK for you to touch them wherever you feel.
Just because a girl may love you does not mean that they still don't have feelings of being uncomfortable at times.
Solution: The solution to this factor is quite straight forward, changing your negative attitude.
Try to give her enough space for her to attend to her own personal matters.
Listen to her opinion and then have an open discussion.
There are actually several factors why your girlfriend is interested to another guy and in order for you to gain back your girlfriend's attention, you should properly identify the factor causing your girlfriend to be interested to another guy and properly come up with an effective solution.
I love her and don't want to lose her No, this is not true for the girl will always need to feel comfortable around you alone.
Just because she may love you it does not mean that you have the right to touch her and make her feel uncomfortable.
If you really love your girlfriend and she truly loves you back, then there is no reason for you to worry and besides, giving her space will also strengthen your relationship.
Solution: Try to limit your vices if possible if you are with your girlfriend, or better, do it only in secret without her knowing.
Should I be worried It will depend on how she is noticing them as in if she is just noticing them as friends or if she is noticing them as in liking them further than just being friends.