Be even more persistent but not seem desperate.
apathetic
No.
if they break up and ignores your calls. also if you see lonliness in their eyes
No, "ignores" is not an adverb.The word "ignores" is a verb, not an adverb.
This behavior is called being opportunistic or using someone for personal gain.
No, there is a button with a skull and it means if you click it, the person cannot heard you at all.
An absent treatment is a form of treatment which ignores the presence of a person - similar to giving someone the cold shoulder.
It means that they won't see you, or have anything to do with you. You can see them though but you can't play anything with them.
if someone is already in a relationship with someone else it is wrong to pursue them.
It seems they may not be interested in you as you are them. Its best to let them be as to not bother them and focus your interest elsewhere.
It usually means that they either, A.) Have no idea who you are so ignores you or B.) your transparent. That last one was a joke . . .
When the person bluntly ignores you, never speaks to you and makes fun of you. It's kind of obvious if you watch carefully.