From what I'm seeing, the "problem" is not sexual tension per se but the release of said tension as it applies to an unmarried pubescent male. Generally speaking, within those parameters, physically speaking, that usually means one of two things: fornication or masturbation. Trevor is looking for ideas for other outlets aside from those two. Punch and I apparently agree that it's incredibly difficult for an average person with a job and a life outside a monastery to implement something that actually works and both note that marriage itself is not always a solution for the release of sexual tension, particularly if you have a history of over-indulgence in self-abuse.
I see Punch's point about obvious tumescence issue, although all of us men here know there are ways around this.
I strictly mean, you are physically aroused. OK. When does the problem begin?
I am hungry right now (another sort of physical arousal). I am observing a fast. There are at least a dozen pizzas within 20 feet of me. Is the fact my stomach is churning a bit and I am salivating a bit a problem? I don't think so. Pretty normal physiological response and I don't feel much culpability in the issue.
It would seem to me such issues become problem if you engage in behaviors in light of them you wish you wouldn't or you become obsessed in not engaging in those behaviors.
In my case, I know 100% of time if I don't walk over and pick up a piece of pizza and put it in my mouth and chew it and swallow it, I will not eat a piece of pizza and I will maintain my fast. There are a lot of gross motor movements there I absolutely can control.
The same could be said for most physical activities including masturbation.
Now, I think if I constantly struggled with walking up to the pizzas, sniffing them, taking an olive off, posting threads about not eating them, I might also have a problem. This is a problem which is more difficult to address and probably stopping the obsession with *NOT* doing something is to begin to understand the situation in a different light and taking practical steps to avoid the obsession with not doing the "wrong" thing.
So the question becomes which case is the problem. From Trevor's history as I know it. It seems to becoming the latter.
If that is the case, I think there is a lot of good advice to be given.
If it is the former, then just exert gross movement control. It ain't that big of a deal. Just uncomfortable or boring at times. If you mess up, then pray and ask for forgiveness. Again I would dare say that it would be rare person who engages in this "self-harm" more often than in gluttony, lying, hardness of heart, lack of charity, etc.
That insight alone could be a beginning point to releasing some of the tension so to speak.