Is it normal that she wants this?

Don't do it man. It'd be cheating.

Tell her to stop

i agree with you. it wouldn't be such a big problem if she wasn't dating anyone. but if she is, that's a huge red flag.

The fact that you asked this question means that you have some sense of morality. So i suggest you don't do it. Think how you would feel if you found out that your girlfriend was playing doctor with some guy.

Next time offer to lick her butt crack.

stop being such a pussy.

I'm sorry don't listen to these people. It is 100% abnormal that you don't want to have sex with any female that offers herself to you, when you are an 18 yo guy.

You should be wanting to explore every inch of her body and she is giving you an opportunity of a lifetime to play doctor.

The boyfriend thing is not a big deal at that age. You should be having as much sex as humanly possibly.

Since she wants to play doctor take it as a chance to find out as much as you can, and learn about her body and what makes her feel good. If you don't you'll regret it forever.

It's fine. If she wants to do t and you do too what's the harm?

People aren't married to their boyfriends if they don't want to be

If she wants to play with your body and wants you to play with her body then do it if you want to

Do it. She wants it with you, she'll want it with another man too.

she or you are not married so it is ok if she and you want to do things!! she was horny as hell and wanted sex bad....you should have gave it to her. she just used that "what we used to do" as a lead on to get you to have sex with her. i sure wouldnt tell her no!! she has what she calls a boyfriend...that is exactly what he is, a friend. she is not cheating as if she was married. evidently she dont think enough of him to not want someone else so go for it...

while she is with someone and they are unaware of her wishes, it would cheating. tell her to tell her man and if he says she can do it have him tell you. Then it's cool go for it!

If she wasn't seeing anyone, I would say "Go for it!" however, I would never do anything sexual or romantic with anyone who I know is involved with someone else, unless of course, its a threesome or some other scenario where I have permission from both of them.

If he was ok with you having sex with her, then by all means. I would advise not asking for his permission in this instance, considering the fact that she went to you behind his back.

I would just talk to her, and let her down easy, just tell her you cannot mess around with someone who is with another, as it is cheating. Sure, it won't be easy to say, and she might get mad, but it is infinitively better than the regret that would come later knowing you helped someone cheat on their SO, not to mention the retribution you may face from her BF, if he found out. (and most likely, he will find out at some point!)

Usually in these situations, the relationship is on the rocks, and more often than not, the one being cheated on is usually rather jealous and possessive, as well as possibly controlling.

If you really like her, maybe tell her before you can do anything, she needs to break up with her BF first.

I know, easier said than done, but still.

give her the best sex she has ever had

You’re 18. Yeah hook up with here.
Once you get married don’t F around. Up until then if you want to go for it. You’ll get old and regret all the times you didn’t hook up when you were younger.
Ask any mature male & they’ll tell you the same. Tell your friends to shut up.

If she cared anything about you guys relationship she wouldn't be putting you in this position in the first place! All that's going to do is just ruin the relationship that you guys have because he's going to find out about it eventually no matter what sooner or later!

It's normal she wants it, but there should be no pressure on you, because it's also normal for you to not want to do this

Don't do anything you don't want to do, or did you give in?