Shall i continue my relationship?

I m maid in a relationship with my master. I m employed in house. He is married with two children. He works abroad. whenever he comes for vacation. It all started when came on a vacation. We went for a movie dinned at restaurant. Before he leave we had a good time. His friends had girl friend s unfortunately he couldn't have a gf before marriage. TOld me to be his girl friend. He is my bf. is it ok to continue. he is very passionate outdoors holding my hands and walking through the road. my friend told me that it is fine to be his gf and advised not to be pregnant. shall i continue in his life as his gf.