Dear Alice,

As a bisexual young woman, I find myself thinking about both men and women, though my sexual fantasies more commonly involve other females. This has led me to wonder several things: At what age would it be appropriate to begin exploring sexual experiences with a trusted partner? I feel emotionally ready for this step now, but I'm questioning whether these feelings are normal for someone my age. I'm also curious about the relative safety of different sexual encounters - would it be safer to experiment with women rather than men when first becoming sexually active?

How can having multiple sex partners be a risk factor for cervical cancer? What is the difference between having sex with one man one thousand times and sex with one thousand men (not that I'm planning to!) one time?

My fiance and I frequently enjoy anal sex. We no longer use condoms with each other during vaginal sex or anal sex. He enjoys ejaculating in me during anal sex and I don't mind it. Immediately afterwards I go to the bathroom and get out his cum, but sometimes it takes awhile for it to all come out. I'm wondering if this is OK to do or if it is harmful to my body because I do enjoy it and would like to continue. I just don't know anyone else who does this and wonder if it could harm me in any way. I've been wondering so much about it lately that I don't want to have anal sex anymore because I'm worried.

I enjoy performing cunnilingus on my girlfriend, and every so often, I get a sore throat. My question is, is it all right to perform cunnilingus on my girlfriend if I have a sore throat? Or is there a chance that whatever causing my throat discomfort could cause her trouble as well? Can the “giver” of oral sex pass along sore throat germs to the “receiver”?

My girlfriend and I have oral sex. I heard that if you blow in the vagina of a female that it could kill her. Is that true?

I have a latex sensitivity, but would like to perform safer oral sex. Are lubricants on non-latex condoms harmful if ingested? I can't seem to find non-latex, non-lubricated condoms anywhere.

I was wondering about the depth of the vagina. I've read statistics that say that the average vagina is only 3 to 4 inches deep. This seems way too small to me, since the average penis is considerably longer than that. Wouldn't that mean that most penises would crash into the cervix repeatedly during intercourse? Since this obviously doesn't happen, my question is this: does the vagina actually elongate during intercourse to accommodate the entire length of the average penis?