How do you know if someone "used" you? What does it mean? Why do they do it, and how?
117789
This is sad.  Typically, people don't know until the very last minute that they've been betrayed.  But to find out really whether this person had been true to you as well as to him/herself, you'll need to be observant, ask questions (but not too much), listen to what others say and make investigations (not assumptions), last, but not least, be sensitive to your inner self (we all have it_intuition).  \n\nBeing used does not mean it's very bad it depends on your perspective of the whole situation.  At least you had something that the other person needed and could not get it any place else..etc.  Can you be specific of the second question?\n\nAs for how and why people use others, that's a good question.  Some people use others for personal gain or for the gain of others through manipulation.
660041
You're being used. Get out of there.
92886
Stop being used by this person.  Make yourself unavailable and move on.
770746
anyone that makes you choose someone over them, isn't a friend.\n\nrun from this person before they use you, take you for what you have, etc.
717290
He's done using you. Find someone else, he probably is.
939778
First I can guarantee you that he will use you\n\nSecond - just let him do it because you are insecure and want to be accepted by him.
270482
You can be "passive aggressive." Look that up on the Internet. Some people have a way of saying things that make you wonder how they meant the statement. If it happens over and over, I would think the person was intentionally hurting me. Ask your friends, or the one/s that told you that you hurt their self-esteem (assumption).
829108
Well usually it would mean that he wants to see how you react and what you are going to say. Each person has their own opinion on it I guess,  and if he is asking you, tell him what you would want someone to do to you so that you know that they like you. And I am assuming if he does like you he will use that tactic.
331462
If the person gives you extra attention it means the person likes you. And he shows you extra care. Or sometimes..he suddenly becomes quiet when your around..
672000
Fact is you have to move on it is obvious even to me you are being used why should they show commitment when you are putty in their hands whenever they feel like coming round. There is a saying over here that springs to mind "Treat em mean to keep them keen"
241313
He is definitely using you for sex. How do you not get that? My goodness, what are they teaching kids in school these days that they can't figure something like that out?
777233
Most of the time when someone gets that defensive, it means they are guilty of something.  Now, he may not be...especially if you (or maybe an ex girlfriend) are very jealous and always make those type of accusations.  But if all you did what innocently ask about them and he blew up about it...I'd be suspicious.
726825
Some guys will use you just because they can (you're allowing it).  It's up to you to put a stop to it.  Cut him off completely, and stay away from him because he isn't showing you any respect.
414896
yeah it used to make me so angry!\nthe way i've learned to deal with it is make it very apparent that there is certain stuff I won't put up with. for the past 3 years i have taken no nonsense from guys i've dated. if someone lies to me, or i can tell is using me, i call him on it. i let him know it's unacceptable and i don't keep those types of ppl around. i am not a mean person; i will do almost anything for people in need and i don't look for fights but when i have someone close to me i do not want them to be treating me badly and i won't stand for it. because of this, everyone who knows me now knows i won't be used (a few years ago this guy used me 'til the cows came home.. thank goodness i will never go through that hell again!)\n\ni would be angry at myself and at them for using me. i've turned that frustration into motivation to keep my life and relationships cleaner and healthier and always think "do i really want this (how the person's treating me) in my life? is this good?"
838994
Hmm...this is a tough one!  Everyone shows their love in different ways and everyone needs different amounts of "me" time.  If I guy was going to use you, he would be using you for sex.  If you think the only time he wants you around is followed by sex, then YES...you are being used. If he really cares about you, trying COMMUNICATING with him!!
555521
people are selfish and they want their way. they know some people (it sounds like you are one of these people) are good at heart and will trust them and they prey on that trust. im very sorry if you have been used by someone. here's a quote from mother theresa:\nIf you are honest and frank\nPeople may cheat you;\nBe honest and frank anyway.\n\nHonesty, humility and simplicity make you vulnerable.\nBe honest, humble and simple anyway.\n\nthere's more to it, but i thought that was the most relevant. smart lady, wasnt she?
70049
This person has deep-rooted problems which doesnt show u directly,wen u see them treating other people wrong, thats giving u clues of what this person's really like, watch out this could be a red flag, theres a chance you will eventually see this person's side turn against u.