Is it normal that my boyfriend spanks me when we have sex?

This is why people have safe words.

It's all part of S&M, which is a common sexual interest. Some people like causing pain during sexual activity or find causing pain itself a sexual activity, others like receiving pain during sexual activity or find receiving pain itself a sexual activity. The degree varies tremendously from person to person, some enjoying a light spanking, others enjoying piercing skin, cutting, burning etc.

It sounds like your boyfriend enjoys mild sadism in the bedroom - he likes to cause slight pain and discomfort to his sexual partner. It's not uncommon.

The problem is that enjoyment doesn't appear to be mutual. If you're not in any way masochistic and it upsets you that he spanks you, you should tell him about it. If he loves you he should respect your wishes and not hurt you anymore. We can't always indulge each other's fantasies and it is something he will have to come to terms with.

Or alternatively if he continues start biting his balls, then tell him they're "perfect and just begging for it" lol

If you're enjoying it, then go right ahead. If you're not enjoying it then tell him and if he continues then leave him, it will only get worse.

This is not abuse, it is love play. A lot of people do it and my wife and I have been doing it for years and it has increased our affection and sex a lot. Don't knock it it can be a lot of fun.

Many are like you, and say nothing, but the couples that do well with this type of sex communicate better. They have safe words and discuss how far and how painful! It can be very pleasurable for both, but only if you have ground rules and you both seek this type of sexual pleasure. Good luck with your choices.

I think that spanking is the most intense, erotic, and best foreplay!
However, it sounds like only HE is enjoying it.

Tell him to give you a warmup, starting off smacking lightly and not too fast; between the swats he should caress, massage, and pinch your buns, as well as tell you how lovely you are and what a fine butt you have--how it's beautiful changing from white to pink to red, and how good it feels as it gets hotter and hotter--and how he can't wait for his hands to feel all over your body. Imagine the special presentation you are on his lap: your lovely bottom right in front of his hands and eyes under his control, and he has access to all the special places below your belt. He should also take time to caress your thighs, arms, back, face, hair--and notice how wet you're getting (and you be sure to give him lots of moans and positive feedback with your voice and body)! If this were a punishment spanking, you'd still probably get aroused and wet, and this would be a good time for him to say that you're enjoying it too much and give you some harder smacks with an implement! Note that many gals want to get spanked more intensely with a belt or paddle after 10 or so minutes when they're well warmed up because the stimulation imparted on their behinds is not “feeling” as intense...

A punishment spanking starts hard and fast--not the erotic spanking he's giving you! The slower, less intense erotic spanking gives time for your body to release endorphin (the body's natural morphine--but stronger) so it deadens the pain--and then you'll probably want him to spank you harder after 10-15 minutes! Remember, this should start slow and remain fairly slow; in fact, a "Good Girl Spanking" starts out this way and the swats are kept below your threshold of pain--and it's quite a treat for you--and for him because you won't be able to keep your hands off him for hot, hot sex!

It's normal ONLY if both of you like it.
If you don't, he's forcing you and it is abuse.
I say this as a man that likes spanking women.
I may start with a few slaps during intimacy, but spanking only if we've discussed it and she WANTS it.

Spanking is very active & powerful foreplay because it can become sexy play AND it releases hormones that excite you and give you an "endorphin rush"

Now, ask for a "Good Girl Spanking," and you'll learn to looove it!
http://www.answerbag.com/q_view/2381390

If you don't like it, then speak up and tell him to stop! It's not that hard.

You said you can deal with it, but do you like it? I don't think you should have to submit yourself to an unpleasant experience just to satisfy someone else's festish. If he's leaving handprints for 2 days afterwards, that's abuse, and if he thinks he can get away with abusing you in this way, he'll do it in others. That's how women get into abusive marriages. If you are even thinking of marrying him, tell him he's hurting you, and needs to control. I tend to think that this is veiled anger that he's taking out on you.

Never engage in behavior that you don't enjoy. NEVER!!! And tell the fuckup. If he doesn't get it I will spank him for you and believe me he will stop!