Be assured that whatever you feel/think, that we're here for you on Christian Forums to give you support. Also, remember that God is infinitely merciful and listens to any and all people who call upon Him to help.
Firstly, a couple of questions- do you know of any major events in your life which could have possibly triggered these feelings/thoughts? And what have you already done to try and manage/prevent your thoughts and feelings towards young boys?
To answer your questions, I'm in an similar position in that I also have feelings for underage boys. I've found it very difficult to talk to anyone about it, even professionally, as feelings such as these are still hugely taboo, even when the person is wishing to seek help for it.
For this reason, I would be VERY careful in who you tell, and assuming that you can find someone who is willing to discuss it, WHAT you tell them. My personal advice is to speak to a professional counselor who is trained to deal with this kind of thing in a fair, non-judgmental and most of all CONFIDENTIAL way.
You may also, if this is not an option for reasons of expense or whatever, find that your pastor can also help. I don't know the exact workings, but I would expect that anything you told him would be taken in strict confidence and only used to help you. Pastors of any sort are trained in dealing with a LOT of things in addition to Biblical training and can support you both in a faith way and in a personal/social way too.
NOTE: On the above, you may find that with dealing with attraction to underage boys, some counselors do not openly advertise their treatment programmes for this kind of sexuality so if you do choose to go for private treatment, you may have to persist before finding something suitable.
You may also find support in an LGBT charity who are again often trained to deal with a lot of different things. Some may be able to offer counseling or social support to you, and would be subject to the same confidentiality as if you were to go through private counseling.
You are also more than welcome to PM me if you wish. Hope I was of some help.
