Not happy unless I'm in a relationship and/or having sex?

I think you are more concerned with gratification than a relationship. You need to re educate your brain that the emotional high you get when you orgasm should be reserved for that special guy and not whenever you want it. separating sexual urges is difficult at any age but if you don't get control of it to some extent it may lead you to becoming a nymphomaniac . Not that being a nympho is a bad thing ; but it may cause stress on relationships you may have in the future and ultimately lead you to be unfaithful. sex is special and should be enjoyed by two consenting parties in an equally satisfying environment. Whilst learning what drives you and makes you go off is healthy ; so you can teach your prospective partner l; you really need to get control of your reasoning as to why you do it. Sex for sex sake equates to whoring and leads young ladies to get unpleasant reputations. hope this helps. ps good luck with your future.