Here are a few thoughts.
I don't think you are a sociopath. I think you are a sensitive guy that has a great deal of respect and guilt in your life.
You can get an STD in a number of different ways. I've done this for well over 20 years and get bare blow jobs all the time. So far, no STDs at all. Some say luck, I say it is the pool is swim in that keeps things clean. But really, no guarantees for anyone.
It does seem you are seeking intimacy more than just sex. But, once you get sex, it is a mother fucker to stop getting it.
You aren't sad because you want to hug a girl, it is your desire for intimacy. That's not sad, it's totally normal. Most of us are the messed up fuckers.
In my mind you are a victim of the judgement society places on meaningless things. Sex is a natural act that every human is predisposed to seek out. Society, mostly religion, has made sex outside of the marital construct a bad thing. It isn't. It is one of our most basic drives. Enjoy it.
If the guilt is why you want to stop, don't. It is a false emotion. No one is getting hurt and you are not a bad person because you like sex. You're normal!
As far as telling a future wife/girlfriend about your sexually experiences, sure, just start by asking her, you first. I doubt she will be too open with her experiences either. But just tell them that yes, you had a few Gfs that you were intimate with in your life. Then ask if they want to see pictures. 
Enjoy your life, don't overthink things, do what makes you happy, don't hurt others. Repeat until happy.
J | |
