What is abuse in a relationship?Any relationship that is emotionally, physically, mentally, economically, or socially unhealthy for one or both people involved.
If my boy/girlfriend constantly makes me feel bad about myself is that abuse?
Yes. This would be considered emotional abuse.
I feel like my boy/girlfriend can't say anything without teasing me, can that be called abuse?
Yes. This would also be considered emotional abuse and is actually one of the most common in relationships and most commonly looked over and labeled as "normal" of abuse characteristics.
If I get in a fight with my boy/girlfriend is that considered abuse?
It depends on the context of the arguement, the actions involved, the length of time it takes for you both to get over it, you communication as work argue and work through it, as well as how often things like this occur in your relationship and much more. But basically, if it happens often--Yes. If there is violence involved--Yes. If there is malicious name calling involved--Yes. etc.
I think that my best friend in an abusive relationship, should I do something or is that like totally not my place? And if I did want to do something what should I do?
You are absolutely in a position to and have the right to try and help, particularly when it involves a loved one, but be careful. There are plenty of sites on the web as well as professionals in your community that can help the advise you on the best approach for your situation. But in the end, the bottomline is that you definitely want to speak up. First, and most particularly, you will want to causally bring it up to your loved one to try and gauge whether or not they see it as a problem. Then you will have a better idea of what expert advice to use.
How do you tell your boy/girlfriend that you think that he/she is being abusive?
This is probably the most difficult part of trying to help an abusive relationship improve and eventually be eliminated. There are many obsticles that lay in the path of a partner that is being abused, but one of the major ones is that typically the other doesn't think that they are being abusive (and note that you should never just come out say blame them for abuse and should try and avoid using the word "abuse" if possible). Also, this one is difficult as well because there is no blanket method for how to address it. Everyone's relationships are different. I would recommend reading up on the topic online and if it is really bad, seek professional help. Only you can gauge how your partner will react and how to handle the situation. Hopefully, if he/she loves and respects you as a person, and cares about spending time with you, you should be able to sit them down and work through these issues so that he/she can see that you care enough to be with them that you would be willing to put yourself out there.
Our friends say that we have a love-hate relationship. Basically we bicker all the time and then make up and have hot make-outs as part of the make-up process. Is that abuse in our relationship?
Bickering is definitely a sign of an unhealthy relationship which can inturn lead to abuse, but depending on the nature of the bickering and the meaning of "all the time" it may or maynot be. As far as the hot and heavy make-out sessions afterward, surprisingly enough for some, this is a characteristic of abuse because it is using physical pleasure to try and mask or erase the previous negative encounter or experience. DISCLAIMER: making-out is not a form of abuse, but the context and reason for the make-out can be. Please, making-out is fun and enjoyable so feel free to use at your will, just becareful to never allow it to be used as a means of one partner getting their way or false/fake apologies.
When we cuddle sometimes he will put his hands slightly under my clothes--not like touching any private parts or anything but...you know. I kinda of feel uncomfortable but at the same time I kinda like it. But then sometimes he accidentally will brush the 
bottom of my bra line, is that abuse? It's probably against my standards but I haven't really said anything to him about it.
This, along with a million other examples that could be given, is a very difficult one because it depends on what your standards really are and how much you and he truly value them to the extent of how much you are willing to "sacrifice" in your relationship for those standards. Just as with sex, it is consentual until one of the participants says, "NO," and the other partner continues anyway. If there is penetration then it is rape and otherwise it is molestation. This should be brought immediately to the attention of law officials and counseling should be started as soon as possible. But, since you said A. you like it, and B. you haven't told him your standards, you don't really have strong grounds to claim abuse. You should always be upfront about your boundaries, physical, emotional, etc. from the onset of any relationship that way you are both always on the same page.
When we are in public places, sometimes my girlfriend will say things that put me on the spot or embarss me. But actually it happens like all the time. I've talked to her about it and asked her to stop doing it but she still persist. She says she thinks it's funny, but I really don't like it. I love her but it's getting to the point that I don't even really want to go out with her in public or with people I know. Is that abuse?
This is considered abuse and you should try and sit down with her in a setting that is private 
and speak very seriously to her about this. She needs to know that you are serious and you really need to tell her how all of this makes you feel. Otherwise, if she is not important enough to you to put in this effort and really help her understand you might consider ending the relationship. Someone that truly cares about you really will put in a valiant effort to change.
Can a person really stop abuse from happening again? Like if a person has the tendencies what can really be done to help them? I've know way too many people that were abusive and they always say, "I'm sorry," or "I love you, I promise I'll never do it again," and in the end what happens? Nothing! Overtime they all just end up going back to their old ways.
Abusive can ABSOLUTELY be changed and stopped. The difference between someone that changes and someone that just keeps saying sorry is real intent. Everyone can change ANY behavior, it is just a matter of time, patience, and effort one all sides.
