I like to feel I'm pretty honest about things 99% of the time. If my friend introduces me to one of this friends/the person he/she is trying to date, I'll let them know if I like them or not. Although I'd be more apt to telling little-white-lies to my girlfriend/wife/significant other as long as it wasn't earth shatteringly important in the long run. For example: I'd tell her I liked a dress when I really didn't if it were just something she bought for no real reason other than a party or just for kicks, but I'd let her know that I don't like it if she plans on using it for, say, a job interview or something
I do however have a "code" if you will about being as honest with someone as they are with me. I was, for the most part, completely honest with my ex girlfriend when we were dating (if you could call it that), but when I found out that basically everything about our relationship was a lie on her part, I made sure to make everything on my part a lie as well on the rare occasions we...uh..."tolerate each others company". If you're not going to be honest with me, then I'm not going to be honest with you
I do however have a "code" if you will about being as honest with someone as they are with me. I was, for the most part, completely honest with my ex girlfriend when we were dating (if you could call it that), but when I found out that basically everything about our relationship was a lie on her part, I made sure to make everything on my part a lie as well on the rare occasions we...uh..."tolerate each others company". If you're not going to be honest with me, then I'm not going to be honest with you