Story, - I got involved by myself in this mess, but how can I get out now?

Hello!
I read your stories and I got the courage to ask for your advice,
because Idon't know any more what to do.
So that's my story. I am 27 year old, married for two years, I have
normal relationship with my husband, sometimes we understand each
other, sometimes we fight, we make compromises, but he is not my
biggest love and that's the problem, he is not very interested in me –
where I am and what I do.
I've met the other before I got married – we were just friends in a
same company, we were travelling, together I thought I was so much in
love with him, but he was just friendly kind without a sense of carnal
interest from his side.
One day I stopped to stand for a relation, who seemed impossible I got
married, but in spite of this we keep on being good friends and
meeting sometimes. I caneven say that our friendship became stronger
during the past two years.
Recently I felt inconsolably, in love withthis man. I will play that
game I said to myself this time. I arranged to spendtwo days just the
two of us, far from anybody who knows us and with some women finesse
we found ourselves in the bed.
In the very sublime moment it comes out thathe has problem with
erection – there's not at all such. Anyhow we've both done our best to
getpleasure, but I am confused. I suspect that his problem is not new.
In fact I haven't heard of any intimate friend of hisbut he is 45 year
old and his last relationship I know about had finishedyears ago, and
the lady got married to somebodyelse.
I do like this man, but thesex is also very importantto me. What am I
supposed to do? I need your advice!