Generally speaking, is it that wrong to really love someone but to not be able to let them know, unsure if they share your feeling or not? Unable to take the risk?

No its not wrong , but it may be unhealthy.

Why would you not want to take the risk?

If of course the one party is married and happy with their family it is the right thing to do and to move on,

And of course I don't believe you can really "love" someone you are not in a relationship with, since love is a felling that really grows, you may have feelings, you may have sexual desire and other feelings but love is not normally it.

So in normal dealings, there is no reason not to tell someone how you feel, but there are times when it would not be right

Generally speaking, is it that wrong to really love someone but to not be able to let them know, unsure if they share your feeling or not? Unable to take the risk?
You feel you love this person and would be so hurt if they did not share your feelings, if they did share your feelings there would be little give away signs, are they always attentive to what you say, are they there willing to help out at every opportunity, are they there when you need them, if feelings were shared then I feel you could tell even if you have not shared your own feelings with them. If you love someone you never want to be apart, you think about that person all day everyday, you eat, breath and sleep with them in mind. Think about their actions towards you, do they appear to be as keen as you, are they feeling the same, that they don't want to say anything because they would rather have friendship than nothing, say something simple like wouldn't it be nice to and suggest something that you could do together, watch the reaction and that should answer your question. Take care love and peace anne x

It is better expressed and shared, but when this is not possible it is hard to deal with.

You should better take the risk, let them know, find out how they feel about you... It is better than concealing your feelings forever, unable to move on. It IS better to know than to not know. The risk you're taking is worthwhile both ways: you find out if you should move on or you find out if the person share your feelings.

In this case, the decision is yours. Take a 'calculated' risk! You might be doing yourself a great favor. :)