My boyfriend said that this little mouth has become sweeter and sweeter since I kissed it.

In this case, you can reply as follows:

1, because you kissed me, my mouth is full of sweet taste.

Sweet words make me feel very happy every day.

3, not only sweet mouth, but also sweet heart.

Because I have been kissed by you, I think I will remember the taste all my life.

I love you, so your smell makes me feel extremely happy.

Baby, my mouth is only sweet to you.