Wali for a Muslim who has no Muslim family members

Q: I was born in a Hindu family and later reverted to Islam. My family had broken all relation with me after knowing it. So I live alone and work in a company. I have received marriage proposal from a Muslim man whom I know for few years. I want to marry him but as I know, a wali is required for a woman to marry. Kindly inform me how to get married in this situation. Do I need to inform my family that I am getting married. They are already very angry after I accepted Islam. I fear that they would harm me.

Homosexual feelings

Q: I am a Muslim but I suffer from homosexual feelings. As per advice from many renowned scholars, I got married. I never disclosed this to my wife before marriage. I still have homosexual feelings. So I kept having these thoughts that I have deceived my wife. So I disclosed it to her and she is ok with it as she loves me a lot and I want to stay with her too. I would like to know if this marriage is valid in the eyes of Allah since I hid this truth from her.