Hello Aki:
Oral sex is no more harmful than kissing--or any other sexual activity. In fact, it's quite a common behavior, and many people greatly enjoy it.
Everyone seems to worry about being "normal." In fact, we're all normal, and whatever is usual for you is “normal” for you. However, because we all grow up in an atmosphere of sexual myths, in a society uncomfortable about sex, most of us are trying to find that elusive “normality” so we can fit in with what we think everyone else is doing.
It’s more important to know what you want and what you like and then examine whether they work for you. Naturally, I’m speaking of consensual activities and not nonconsensual violence, which is not really sex at all.
One last point: any activity that exposes you to infection or disease can be harmful unless you use risk reduction techniques--oral sex included. So play safe--and have fun! Dr. J
Its an amazing way to show each other you care.....