Your College Lecturer
He is probably older than you, more worldly and gets you a good grade.

Why you should stay away: If anyone found out about you, they would say you slept your way to better grades. Plus, he would lose his job and possibly his teaching position.

How to get rid of him: Tell him somebody is blackmailing you and if you don’t stop seeing him, they are going to report you.

Of course, there are exceptions. For example, if "the body builder" knows how to give you the same type of attention he gives his body then this could potentially be a good thing (as long as you can handle other women trying to pick up on him). And if you are a workaholic that has no plans of changing then being in a relationship with another workaholic will allow the two of you to focus more on your careers while hopefully having some focus left for each other. If "mamma's boy" mom loves you and you can get the same focus from the man as his mom gives then just maybe... it's a stretch. Remember, it's doubtful any of these men will change so it's best not to try and change them.

A good approach to take in wanting out of one of these relationships is to be honest. This may gain more respect. Tell "mamma's boy" that he's too focused on his mom. Tell the womanizer that you only have room in your life for a man that only has room for you. It's doubtful that they'll change, but at least they'll know the real reason you don't want to pursue a relationship.