* You can smoke, but partner cannot kind of thing? People always
want to protect the ones they love, but have zero regards for
themselves. Sometimes this happens from the roots of selfishness -
I can cheong, you can't kind of thing. Reason being: you are a girl
and if you drunk, kanna touched by guys, I dun like it. 
** This is a classic case of how the mind and heart works. The mind
being the rational one will tell you how bad the situations is, how
suxy your bf/gf is, how tired you are in the relation, etc. Friends
aren't love, therefore your mind is controlling the situation when
you are speaking to them.
You heart will always think emotionally (since your a woman, more
if you are negative sign astrologically, even more if you are
water-based sign.), about how long you have been with him, how the
good old days is, how you feel when he hugs you, cuddles you, etc.
When you sees him, the emotional mind takes over because he/she is
your love. You lips speak from the emotions, not from the rational.
Therefore this explain the behavior.
*** If you trust your partner, you would ask how do you trust your
partner if he is faithful anot. Trust is a yes or no thing - no
such thing as a half trust. If you do, you believe in him and his
actions. If not, you don't. Regarding trust, always communicate to
speak about your insecurity - often you are being unfair because of
your mis-preceptions. So do speak up. 
