It means that they are benefitting more from the relationship with you than you are. For instance they have you do their work for them or always let you pay for things the two of you do together. Maybe it is sexual meaning you have real feelings for the person but they only care about the sex.
If you feel like you are the one doing the giving most of the time, you are being used.
Someone who uses bow & arrow for shooting.
slang for someone who uses meth
1. if an object includes bright colours, or if something uses alot of colours.
plagerism is when someone uses or "steals" someone elses ideas or creations without giving the creator credit.
A moderate user is someone who only uses a computer occasionally.
It Is when someone uses bad language ALL THE TIME
Jocked off means someone uses someone elses phrase, style, demenor or all of the listed.
They like you.
If someone uses their time efficiently it means that they use their time wisely.
Usually when someone uses that term they are calling you a homosexual but there is the rare chance that they actually mean what the lol. That's lalilulelolz to you.
Nothing - I wouldn't read too much into it.
The term caliber is often used to mean "level of excellence." If someone uses this phrase, they mean he was a good employee.