Is safe S/M role-playing normal? And where does one draw the line if mutual consent is established?

When I'm "making out" with my boyfriend, I get kind of nervous cause I don't know where to put my hands. I know you're probably going to say just go with the flow or something, but like I'm just wondering, where do guys like to be touched when making out??? Thanks for your help~!

My girlfriend and I have been dating for a year, and I love her very much. We have a mutually fulfilling sexual relationship, and we communicate well. Recently, I told her of my fantasy of her performing oral sex on me and swallowing my sperm. She said that would be "gross," and has never brought me to climax during oral sex because she does not want me to come in her mouth. I perform oral sex for her, and I enjoy having her sexual fluids on my face and tasting them. We have discussed sexual fantasies before and have pleased each other very much. But she will still not accept my sperm in her mouth, and I feel like she does not want to accept a part of me into her body -- that she does not have the fullest desire to please me. When I first asked her to do it, I expected her to want to pleasure me, to have desire for my penis. Now, I feel like she thinks my body is not desirable. My question is: what must I do or say to make her change her mind, to make her understand how much I wish she'd do this?

I have been in a good relationship for almost four years. My boyfriend is loving and generous and I have good reason to believe this will lead to marriage. (I hope!) The problem is that I have faked orgasm with him since we first started dating. At first I just thought it would be a fling and wanted to be "good in bed." As time went on, I realized this could be the real thing, but by then, it was too late to tell him the truth. It's not his fault — I have never been able to orgasm through intercourse no matter whom I was with or what I tried. I feel sad all the time for lying to him (sometimes he suspects I've faked it, but I still deny it). It just seemed easier to let him believe it because I didn't want to be a frustration to him and he seems so happy when he thinks he has satisfied me. My question is: should I tell him now after almost four years? I think he would be crushed! Maybe he'd be angry that I've lied so much. Maybe I don't want the pressure of having to really come. But I really don't think I can keep this bottled up inside anymore.

Sigh...