Ask. If you are transparent and honest with someone you have every right to expect that in return. Ask - you have no choice. If it is not obvious from words, behaviour, attitude, and conduct that you are loved in return, then you are not.
>It pains me to e in this situation.
Love is like that, Anon. The best explanation of love I ever heard was from Robert Heinlein. I'll tell it to you, but only with the caution that it must be mutual: 'Love is that condition in which the happiness of another person is essential to your own.'