lol Syrum you really made me laugh there about them marrying him.
but you do have a really good point i know i shouldn't care what others think.
Please listen to me. You are YOUNG, you have an entire life ahead of you, Sex/making love/intimacy/affection , these things are beautiful, they are meant to be within marraige shared on a regular basis with pleasurable enjoyment, these things are stress relievers, what we do to make up after fighting, Biblically it is 2 people becoming "one", it brings us emotional connection, keeps many from resentment.
NEVER worry about the Judgers in life. It makes no difference if you are a Saint, someone will come along and JUDGE, this you can count on. Syrum is right, let them "marry" him and walk a month in your shoes.
YOU will regret wasting these years if you stay in a sexless unfullfilling marrraige. Terrible regret. Read some stories from this site http://sexlessmarriage.yuku.com/
this will open your eyes to the pain that never ends.
You need to sit him down, have a long talk. You said he doesn't want to talk about it. This is NOT acceptable! If he is NOT willing to go see a counselor, go see a medical Doctor to look into his Test levels, this IS & should BE a DEAL BREAKER.
Move on, find happiness with another, at your age, most men are dying for sex!