My boyfriend and I have been official since about a week ago. Anyway, he always blushes whenever someone talks about me, or mentions the fact that we're dating. Like, for instance, my friend saw him and screamed, "OMG YOU AND HER ARE SO CUTE TOGETHER!!" And he just blushed and smiled and said, "Yeah." And whenever we go on a date and he sees me, he starts blushing. What does that mean?