v-love,
I don't know what to say here in this public forum but I do know people who have been in situations like yours. People come into your life for a reason and they exit your life for a reason. The married person here in your life is here to teach you something but he may not be the end-product of what you're here to learn. What probably is your next step is to find the true life-mate you need to have in your life and live a wonderful existence with the skills you have learned so far.

I believe that getting involved with a married person is "ok" to some degree but is this culture's "big taboo" that most couples and generally anyone would abhor. Because that's how we're raised and that's what our religions tell us.

What to do? Check yourself. Could you allow yourself to be happy with someone else? Does this person define you? Getting over the other person - you can easily do that if you love yourself fully.

Take a look at Wayne Dyer's "Power of Intention" book. Put the person you need/want in your life in your heart and go out and live. That person will come to you. If you spend a lot of time thinking about how you will get over this married guy - you will continue to do just that - spend time trying to get over this married guy. The more you try to stop something, the more that something will envelope you.