Easily aroused - any way to prevent it?

Mornin guest, Sounds to me like you are a normal and healthy 16 year old young man, with all of your plumbing doing exactly what it's supposed to do. Your hormones are all over the place right now and you can not control what your penis does.

There isn't much you can do about it other than don't allow yourself to get into these situations, which is easier said than done, i know.

Just be careful because now that he knows whats up, he may try to over ride your thinking. What i mean is that temptation could and probably will get the best of you and you must protect yourself. Make sure you have condoms.

Embarassed? Don't be, that's exactly what your body should be doing in those situations.

Has she noticed yet? She will probably be quite pleased knowing you respond that way.